How to Migrate to SharePoint Without Losing Data or Productivity

Last Updated 4 hours ago ago

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SharePoint Server 2016 and 2019 both lost extended support on July 14, 2026. That means no more security patches, no more bug fixes, and nobody at Microsoft to call when something breaks on a Friday afternoon.

For a lot of IT teams, that deadline turned “we’ll migrate eventually” into “we need to migrate now.” Rushing a SharePoint migration is how companies end up with missing files, broken permission structures, and a help desk buried in tickets.

Look closely at almost any migration horror story and you’ll usually find a shortcut somewhere: a step someone skipped to save a week, or a plan that got rushed because leadership wanted it done by quarter’s end.

Before you pick a tool or set a cutover date, take stock of what you’re working with. Some teams handle this internally. Others bring in a dedicated SharePoint migration platform for the heavy lifting, especially when version history, permissions, and metadata all need to survive the move intact. If you’re weighing that route, spend a few minutes to view the technical requirements on their official site so you know what your source environment needs to support before you commit to a plan.

Once you’ve settled on an approach, the real work starts.

Audit Before You Migrate Anything

Don’t open a migration tool on day one. Open a spreadsheet instead.

Walk through your current environment and note what’s actually there. You’ll usually find duplicate files nobody’s touched in years, orphaned sites with no clear owner, oversized libraries that should probably be split up, and custom workflows or old InfoPath forms that won’t survive the jump as-is.

Skip this step and you’ll drag years of digital clutter into your new SharePoint environment, then spend the next six months wondering why nobody can find anything. A short audit up front, even just two weeks, saves months of cleanup on the back end.

Map SharePoint Permissions Before You Migrate

A lot of what gets reported as data loss during a migration is really a permissions problem. The files are still there. Nobody can open them anymore.

Before you migrate, map out who has access to what today. Note which groups control sharing, and flag anywhere external guests have permissions. Then decide: keep those permissions exactly as they are, or use the move as your chance to finally clean up years of messy sharing habits.

Metadata needs the same attention: custom columns, content types, tags, all of it. Skip mapping this and files often end up searchable only by filename once they land in their new home. For a large library, that’s close enough to losing them anyway.

A regional healthcare network learned this the hard way. Every file in its records library survived the migration, but the compliance tags that flagged retention dates didn’t come along. The compliance team spent three weeks manually re-tagging everything the old system had organized automatically, all because metadata mapping never made the checklist.

Pick a Migration Method That Matches Your Reality

A handful of solid migration paths exist, and which one fits depends on your setup: how complex your environment is and how tight your timeline is.

Native Microsoft tools, like the SharePoint Migration Tool or Migration Manager, work fine for simple file-share-to-SharePoint Online moves. Bigger, messier environments usually need a third-party platform instead, especially with thousands of permissions, old workflows, or content spread across several systems. And if your internal team is stretched thin or the deadline is tight, a managed migration service might be the safer bet.

Pick based on how complex your environment actually is. A lightweight tool forced onto a complicated migration is one of the fastest ways to corrupt or lose data.

Pilot the SharePoint Migration First. Always.

Don’t migrate your whole company in one shot.

Pick one department, or a representative chunk of content, and run a pilot migration first. This is where the surprises show up: a workflow that breaks, a permission structure that doesn’t translate the way you expected, a file type that needs special handling.

This plays out all the time: a mid-size firm pilots with a single 40-person department and discovers a widely used approval workflow doesn’t exist in the new environment. Because that surfaced in a small pilot instead of an 800-person rollout, the team has time to rebuild it in Power Automate before the full migration happens. No fire drill. No angry emails. Just a fix, made early, while nobody’s watching.

Productivity Dies When People Can’t Find Things

Even a technically flawless SharePoint migration can flop if employees can’t locate their files afterward.

Before cutover, give people a clear timeline and one point of contact for questions. Provide a short, plain-language guide covering what’s changing: new URLs, new navigation, new sharing steps. And keep the old environment in read-only mode for a set window instead of shutting it off cold turkey, so nothing feels like it vanished overnight.

Most productivity loss after a migration has a simple cause: people can’t find files that simply moved somewhere new. A little extra communication in the first two weeks prevents almost all of it.

It’s also worth asking a bigger question while you’re at it: is SharePoint even the right long-term home for your documents, or just the default one? We’ve broken down what to look for in a document management system if you want to settle that question before you finish the move rather than after.

The Bottom Line

Migrations succeed or fail long before anyone transfers a single file. The organizations that come through clean share a few habits. They audit first. They map permissions and metadata on purpose. They choose tools that fit their actual complexity, pilot before committing, and treat communication as part of the plan, not an afterthought.

SharePoint 2016 and 2019 are already past their support window. At this point, standing still is the riskiest move you can make.

Ready to migrate to SharePoint without the guesswork? Communication Square helps organizations plan and execute SharePoint migrations that protect data, permissions, and productivity from day one.