Every IT director who has lived through a practice management migration knows the shape of the story before it starts. The kickoff meeting is optimistic. The vendor's timeline slide says four months. By month six, the finance team is still running two systems in parallel, half the attorneys have quietly gone back to their old habits, and the "go-live" date has moved twice.
That story isn't inevitable. It's just what happens when a migration is treated as a single, all-or-nothing cutover instead of a sequenced, de-risked project. And with several legacy platforms now approaching forced end-of-life dates, a lot of firms are about to find out the hard way which kind of migration they signed up for.
Why "big bang" migrations became the default
Most practice management migrations inherited their shape from an earlier era of on-premises software, when moving data meant physically standing up new servers, and vendors had every incentive to bundle as much scope into one project as possible. The result is an industry norm where a multi-month pilot group, a phased rollout, and a firm-wide retraining cycle are treated as signs of diligence rather than symptoms of a process that hasn't been rebuilt for how firms actually operate today.
That norm made sense when it started. It doesn't hold up as well now that firms are migrating out of necessity rather than ambition. On-premises Finance Core support for platforms like Coyote/SurePoint ended February 28, 2026. Firms still on Tabs3 or Juris are watching similar timelines. None of those firms chose this migration for strategic reasons. They're being forced into a decision, and the last thing they need is an 18-month project layered on top of an already-overdue one.
What actually drives migration risk
In our experience, the projects that run long and painful almost never fail because of the new software. They fail because of a handful of predictable, fixable issues:
- Data mapping treated as an afterthought. Matter numbers, trust accounting structures, and historical time entries get exported late, discovered to be inconsistent, and cleaned up under deadline pressure instead of scoped up front.
- No parallel-run plan. Firms either cut over cold (high risk) or run both systems indefinitely with no defined exit date (high cost), because nobody set a clear parallel-run window with an actual end date.
- Training scheduled after go-live. Attorneys get access to a new system with no context, form bad habits in week one, and IT spends the next quarter unwinding them.
- One big cutover instead of a sequenced one. Billing, timekeeping, conflicts, and document management all move on the same day, which means a single hiccup in one module can stall the entire firm.
None of these are inherent to switching platforms. They're project management choices, and they can be made differently.
A de-risked sequence that actually works
The firms that migrate with the least disruption tend to follow a similar pattern, regardless of which systems are involved:
- Scope the data before scoping the timeline. A short discovery pass on matter data, billing history, and trust accounting structure should happen before anyone commits to a go-live date, not after.
- Separate timekeeping from the rest of the stack. Moving time capture first, ahead of a full practice management cutover, gives attorneys a low-friction win and gives IT a smaller, lower-risk first move. It also stops revenue leakage immediately instead of waiting for the full project to finish.
- Define the parallel-run window in writing, with an end date. "We'll run both systems until it feels safe" is how parallel runs become permanent. A firm-set exit date, even a conservative one, keeps the project moving.
- Train inside the tools people already use. Attorneys adopt fastest when the new system shows up inside Outlook and Teams rather than requiring a new app, a new login, and a new habit built from scratch.
- Sequence by risk, not by convenience. Move the lowest-risk, highest-friction-relief pieces first (typically timekeeping), and save the more complex integrations (trust accounting, conflicts) for once the firm has a working win under its belt.
Firms that follow something close to this sequence are routinely live on core timekeeping in weeks, not months, with the rest of the migration following on a schedule they control rather than one dictated by vendor bandwidth.
The real question to ask a vendor
The next time a migration timeline lands on your desk, the useful question isn't "how long will this take." It's "which parts of this timeline are actually required by the technology, and which parts are just how this vendor has always done it." Increasingly, the honest answer is that very little of the traditional multi-month migration is technically necessary. Most of it is inherited process.
Firms facing a forced migration this year don't have the luxury of an 18-month project. The good news is that they don't need one.
About the authors: Adam Nelson is Director of Sales - North America at MATTEROOM, a legal technology company providing AI-powered timekeeping, practice management, and outside counsel guideline enforcement solutions for law firms.