ATS Migration Guide: How to Switch Your Recruiting Software Without Losing Data
Most search firms we talk to already know they need to switch their ATS. If you're still unsure, there are usually clear signs your recruitment firm needs a new ATS. The pain is real: clunky workflows, poor search, no API access, and a system that was clearly designed for a world before AI agents existed. But they don't switch. And the reason is rarely the new software. It's the migration.
Switching your ATS can feel risky, especially when your recruiting database is on the line. In this guide, we break down how ATS migration works, what to expect, and how to move your data safely without disrupting your team.
Why ATS Migrations Feel So Risky
We get it. Your candidate database is one of your firm's most valuable assets. Years of contacts, notes, relationship history, search records, custom tags, resumes, and reference documents. The idea of something going wrong during a transfer, of losing even a fraction of that data, is enough to keep firms on systems they've outgrown for years.
One Crelate customer put it well: they'd been avoiding migrating their legacy recruiting database for years, and their only regret was not having done so sooner. That's a pattern we see constantly. The anticipation of the migration is almost always worse than the migration itself.
How Long Does an ATS Migration Take?
The industry average is 8-12 weeks. Stardex does it in under two.
Here's what makes ATS migrations painful at most vendors: they hand you a CSV template, wish you luck, and charge you extra if your database is large. Some vendors treat migration services as a profit center. Others give you a project manager who's juggling 30 other implementations at once. The result is a process that drags on for months, with your team stuck in limbo between two systems.
Stardex ATS takes a different approach. We handle the ATS migration end-to-end, and we optimize for two things:
Zero disruption. Your team keeps working in your current system while we handle the heavy lifting in the background. There's no "dark period" where nobody knows which system to use.
Clean data migration. Every contact, note, tag, attachment, custom field, resume, and search record comes over. We review everything with you before going live. We don't consider a migration successful until it's 100% right.
Throughout the process, you'll have direct access to our team via a dedicated Slack channel and phone. Not a ticketing system. Not a chatbot. Actual humans who understand recruiting data.
ATS Migration Timeline: What to Expect Step by Step (Stardex Guide)
Here's how a typical migration plays out, broken into four phases:
Phase 1: Data Export & Setup (Days 1-3)
We pull an initial sample of your data from your ATS backup or API and begin loading everything: contacts, notes, tags, custom fields, attachments, resumes, and PDFs. Your team's only job here is to add us as a user to your current system (or share a credential) and hop on a 30-minute call so we can review any custom fields or nuances in how your team uses the system. That's it.
Phase 2: Sample Review (Days 4-7)
We migrate roughly 5% of your data and schedule a review call. This is where we walk through the mapping decisions together: how fields map, whether tags carry over correctly, and how profiles look in the new system. Your review team spot-checks profiles, fields, and tags in a sandbox. This usually takes about an hour.
Phase 3: Full Migration (Days 7-10)
We run the full migration and conduct a final data review to confirm everything landed cleanly: roles, pipelines, documents, everything. One more review call with your team to verify, usually 30-60 minutes.
Phase 4: Team Onboarding (Days 10-14)
Go-live day. We run onboarding in the morning, hold office hours later that day, and then again later that week and the following week. The shared Slack channel stays open for real-time support. Your team attends onboarding and office hours as needed. Nobody's left to figure things out alone.
What We Need From You For a Successful ATS Migration
Three things:
A credential or user access to your current system
Someone on your team has been designated as the review point person
A target go-live date (we'll work backward from there)
That's it. We handle the rest.
ATS Migration FAQs
What platforms do you manage?
How much of our team's time does this take?
What if we need to move faster?
What systems have you migrated from?
The Real Cost of Not Switching Your ATS
The cost of staying on a system that doesn't fit your firm is compounding every day. It's the searches that take too long because your ATS search is limited. It's the candidate relationships that go stale because your system doesn't make it easy to stay in touch with them. It's the inability to plug in AI agents or automation because your ATS was built in 2014 and hasn't meaningfully evolved since. Modern systems like Stardex are already enabling this; here's what an ATS that works with Claude actually looks like in practice.
The recruiting firms that are going to win over the next few years are the ones building leverage through better tools and smarter workflows, not the ones staying loyal to software out of migration anxiety. The firms that deploy recruiting agents, connect their systems via APIs and MCP servers, and treat their candidate data as a living asset rather than a static database will pull ahead.
If the only thing keeping you on your current system is the fear of moving your data, that's actually good news. It means you've already made the decision. And if you're already exploring your options, it helps to see what modern platforms actually offer. Here's a breakdown of the top ATS software picks for smarter recruitment.
Ready to talk about switching your ATS?
Book a call, and we'll give you a realistic assessment of your specific migration process.
