Last updated on September 19th, 2026 at 07:49 am
The first part of most migration guides is a stark warning of the demise of Magento 1. You know that. In June 2020, Adobe officially ended support, and amazingly, tens of thousands of stores are still contributing to this day, using Adobe without knowing something is apparently broken.
The reality is, the question isn’t migration. That’s what really happens when you do, and how many teams get it wrong until three months in.
Table of Contents
The Platform Shift Is Bigger Than It Looks
It’s Not an Upgrade – It’s a Rebuild
This is the one that stumps people. There is no newer version of Magento 1. Magento 2 is not a newer version of Magento 1. It’s totally a different platform, different architecture, different file structure, etc. You are not clicking an “upgrade button.” You’re setting up a brand new M2 instance and carefully moving things across.
The migration officially addresses four concerns: Data, Extensions, Themes, and Custom code. Each one will take a different path, carry its own risks, and have different timing.
What surprises most teams is that the four work streams don’t move at the same speed. You can script and execute data tabulation in phases. Rebuild and rebuild themes is just a design endeavor. Extension reviews are subjective and will be done individually for each plugin. And custom code? That is typically an exercise in rewriting logic from the ground up, since M1’s designs can’t be represented in that format.
Where the Architecture Gap Hurts Most
Magento 1 is tightly coupled. Magento 2 switched to a service-oriented, modular architecture. That’s a good change for long-term performance and maintenance, though, and everything from the old codebase that just “works” doesn’t work in the new one.
I’ve seen and heard of migration projects where the developers thought that their M1 modules would need little modification. That guess often stretched into weeks. But the smart way to handle it is to audit each extension for business value before deciding whether to port, replace, or remove it outright.
The Data Migration Tool: Useful, But Not Magic
How the Official Tool Actually Works
The official, supported method of transferring your store’s core content – products, customers, orders, configurations, and promotions – is through Adobe’s Magento 2 Data Migration Tool.
A CLI tool, with a GitHub project page and Adobe Experience League documentation.
The tool can be executed in three stages of operation:
- Moves: moves settings are stored.
- Data mode: processes bulk transfers.
- Sync changes: sync changes that occur during migration (new orders, new customers) (done in Delta mode)
Each mode consists of three phases: (1) integrity check, (2) the transfer, and (3) verification. XML map files specify the structure from Magento 1 to Magento 2, including Magento 1 tables and fields to map to the Magento 2 structure.
One thing I noticed while working through the documentation was the assumptions made about having a clean source database. The longer you have the quote table bloated with years of quote data, abandoned carts, or duplicate customer logs, the slower and sometimes borked the migration becomes.
The Delta Sync Strategy Most Teams Get Wrong
During most of the migration, the M1 store won’t be down because of delta mode, and it will only ever be down for a short cutover window. Use Delta mode just before the go-live, or after a few hours, run Data mode on a checked-out copy of the database to get the changes.
Sounds clean. It takes careful timing and a good set-up plan to use effectively in practice. Those that fail to plan properly will get inconsistent data or a greater window of downtime – not ideal for a live ecommerce service.
The direct_document_copy feature can speed up changes to these databases if both databases use the same MySQL instance. Fortunately, most summary reviews don’t cover this aspect of a book.
What the Magento 1 To Magento 2 Migration Actually Breaks
Your Extensions Won’t Survive the Jump
No Magento 1 extensions are compatible with Magento 2. Not even close. You’d have to take the time to go through each one and find out just how important it is, whether there is a Magento 2 version available, and even if there is, whether a different option exists or if you choose to build it in Magento natively.
When it is more complicated, such as extensions containing custom data, it becomes more complicated. By default, the Data Migration Tool can’t decipher what to do with data from tables it doesn’t know about if a plugin built its own tables in M1. Adobe has been implying the opposite when it comes to extending the tool: they will do so via extension points (adding custom steps and handlers), not by changing the core migration logic.
Teams that tried to work around this by hacking the core migration steps to avoid the normal process ended up with fragile setups that failed during the Delta sync phase. The extension point approach works a bit slowly at the beginning, but is more solid at runtime.
Your Theme Is Gone – Fully
The Magento 2 theming system is totally different. New structure for layout XML, LESS/SCSS workflows, and a new template hierarchy—no transfer of any of your Magento 1 .TMG files.
This is the case for most stores, which will either pick some base theme (such as the Luma theme or a commercial set) or commission a custom rebuild. Whether you are thinking about a headless or PWA frontend, this might be the perfect time, since it’s not the second disruptive project coming your way later.
Migration timelines can be extended during the theme rebuild. It’s truly an independent design and development project running in parallel with the data work.
SEO Risk Is Real and Underplanned
The URL structure may vary significantly between M1 and M2. Everything from category paths to product URLs to layered navigation may change. That can lead to 404 errors, lost link equity, and even traffic loss that can take months to recover from without a proper SEO migration approach.
The right way: Start by creating a 301 map, then create a full URL inventory before migration, validate the 301 map and structured data in the new M2 environment, and stay close to GSC for the first 60-90 days after migration.
This is part of a broader migration plan. If you’re undergoing similar cryptographic and/or infrastructure changes at the same time as you’re on a platform journey, the concepts covered in Planning and Executing Your PQC Migration – including inventory, phased (otherwise known as staged) execution, and a rollback plan – apply here more than you might think. In the end, a good stack is a good stack, which makes for a good migration.
Timelines Nobody Likes to Hear
3 Months or 12: What Determines the Difference
For a “typical store,” Adobe partner surveys and migration guides generally cite 3–6 months. The timeframe commonly cited by Adobe partner surveys and migration guides for a heavily customized or integrated store is 9–12 months; for a “typical store,” it is 3–6 months.
The factors that encourage you to go to the longer end:
- The catalog is large, has lots of products (100k+), and complex attribute sets.
- A wide range of custom integrations like ERP, PIM, 3PL, or CRM.
- Custom code that is not available on M2.
- Legacy or poorly documented code in the M1 codebase.
The stores that complete first seem to have honestly cleaned up before they began – they do not have all their products to sell, so the problem is you will find no dead products, no old orders to backlog, no honest sign offline, etc.
The damage really happens during rushed cutovers. The shortcuts taken by omitting Regression Testing, omitting the SEO checklist, or shipping without a Delta sync plan will produce problem(s) after go-live – and will directly affect revenue – which take weeks to resolve.
What’s Changing in 2026 and Beyond
Headless and PWA Are Reshaping What Migration Means
Magento 2 is mature by itself. It’s still in development, and that’s how merchants want to operate it. The front-end full-separation projects are now more common – utilizing Magento 2 as a backend commerce engine and serving the storefront through PWA Studio, Vue Storefront, or a custom-built React/Next.js front end.
This trend matters for anyone considering a migration right now. With the theme rebuilt, even if you’re doing it anyway, it’s less hassle to go headless than it would be to disrupt every working M2 theme setup again in just three years.
Cloud-Native Deployments Are Becoming Standard
More and more, post-migration M2 environments are landing in Adobe Commerce on Cloud, Docker-based environments, and Kubernetes deployments. Usually, infrastructure modernization (building a new host, configuring the CDN, setting a new caching strategy) accompanies the platform work in migration projects.
A common mistake is to treat these as stand-alone projects. Teams that folded infrastructure decisions into the migration plan had smoother go-lives than teams that planned infrastructure separately.
Free Resources That Are Actually Worth Your Time
Where to Learn Without Paying for a Course
The official Adobe Experience League docs about the Adobe Data Migration Tool are indeed sophisticated – about modes, steps, stages, and extension points, etc. The tool’s GitHub repository includes configuration examples, but Google search doesn’t readily return links to migration guides.
Apart from official sources, there are several community resources worth mentioning:
- The migration tutorial provided by MGT-Commerce (updated in 2026) provides practical information on the entire migration checklist, extension review, SEO analysis, and data cleanup.
- MageComp’s full migration guide includes prerequisites and the Data Migration Tool installation procedure.
- This is Meetanshi’s step-by-step guide, which is easier to follow and useful for getting oriented.
- Goivvy’s migration guide is super useful, especially for common problems and solutions.
Trying to find out how to do video walkthroughs on YouTube yields the same sort of free content that you didn’t have to buy at an agency and comes from customers without the punch of agency blog posts.
To add context on migration success as a security/compliance practice, the NIST post-quantum cryptography project is a helpful parallel; in both cases, a successful migration involves a phased approach, a risk inventory, and clear migration stages.
The Business Case Beyond Compliance
Performance Numbers That Actually Matter
On average, Magento 2 is about 50% faster at loading a page and about 39% more able to process orders per hour than Magento M1 with the same hardware and software setup. These are NOT marketing numbers; they come from benchmarks on similar setups.
Faster page loads, in terms of measurable conversion improvements, are especially valuable for high-traffic stores. Order processing capacity is also important in high-volume stores during peak times, such as promotions or a seasonal ramp-up.
For Magento 1 users, the new release of Magento 2 includes some of the same third-party add-on functions now built in, such as a better admin UI, built-in full-page caching, and an improved checkout. This means fewer extensions in your stack, fewer compatibility issues, and a more stable retail site overall.
Using Migration as a Cleanup Opportunity
Let’s face it, one overlooked part of the move is cleaning up properly. Drop unused extensions—keep event history without the requirement to be current. Eliminate untouched CMS pages after a couple of years. Trim your product mix.
It is always easier to build a high-performing, maintainable store from scratch than to run with a lot of data from the beginning.
Honest Recommendation
Magento 1 to Magento 2 is not a weekend project; you can’t plan it as if everything is going according to plan. Good stores treat it as a project with a definite timeline, a defined testing phase, and an honest extension audit.
For developers and agencies, the top-paying niche services right now are SEO-safe, zero-downtime, or headless-ready packages, where store owners on M1 feel unsure.
As a store owner or as a CTO, it’s easy to figure out that for each month on M1, it’s a month of an unpatched security threat on a shrinking platform. Migration is real, but it’s constrained. The risk of staying isn’t.
The tools have been proven to be ready to use. Documentation is good. The route has been well established. The quality of the planning and honesty in the scoping up-front largely determine how it goes.
I’m a technology writer passionate about AI and digital marketing. I create engaging and useful content that bridges the gap between complex technology concepts and digital technologies. My writing makes the process easy and engaging. I encourage participation I continue to research innovation and technology. Let’s connect and talk technology!
