
Onboarding a new property portfolio is one of the most exciting phases of growth for any real estate firm. Whether you’ve just acquired a new set of assets or are taking over management for a third-party client, the transition represents an opportunity. However, moving data from an external legacy system to your internal Enterprise Resource Planning (ERP) platform, whether it’s Yardi, MRI Software, or another solution, is rarely as simple as "copy and paste."
At Assetsoft, we have managed countless data conversions, often involving complex portfolios with thousands of units and tight deadlines. We know that a failed onboarding process can lead to financial inaccuracies, frustrated tenants, and operational downtime. To help you ensure a seamless transition, we have compiled our top best practices and "things to look out for" based on real-world case studies and industry standards.
1. Define the Scope (and Watch for "Creep")
One of the most common risks in data conversion projects is scope creep. In a recent Assetsoft case study involving a migration from Jenark to MRI Software, the initial scope was limited to Residential and Commercial Management data. However, as the project progressed, the requirements expanded to include historical data, lease options, budgets, and scanned documents.
The Fix: Define your "Must-Haves" versus "Nice-to-Haves" early.
- Must-Have: Current Resident/Tenant data, recurring charges, security deposits, and open AR/AP.
- Nice-to-Have: Five years of historical transaction details (often, a trial balance as of a specific date is sufficient).
Be prepared for the reality that business doesn't stop during migration. We often see clients acquiring or disposing of properties during the conversion project. Your project plan must be flexible enough to handle these "moving targets" without derailing the entire timeline.
2. Don’t Rely on Manual ETL
If you are onboarding a portfolio of 10 properties, manual entry may be sufficient. But when you are dealing with 2,600 commercial leases or 6,500 residential units, manual Extractions, Transformations, and Loading (ETL) are a recipe for disaster.
The Assetsoft Approach:
Manual uploads of one file at a time are inefficient and prone to human error. Instead, we recommend writing automated scripts or programs to extract source files and map them directly to the import format required by Yardi or MRI. Automation ensures consistency. If a mapping rule changes (e.g., how you handle "loss to lease"), you can update the script and re-run the entire dataset in minutes rather than hours.
3. Classify Your Data: Static vs. Transactional
Not all data is created equal. One of the most effective strategies we employ is classifying data into two buckets: Static and Transactional.
- Static Data: This includes property names, unit addresses, bank account details, and amenity codes. This data rarely changes.
- Transactional Data: This includes tenant ledgers, open charges, and GL balances. This data changes every day.
Best Practice: Load your Static Data early. By finalizing property lists and unit mixes weeks before your "Go-Live" date, you reduce pressure during the critical cut-off week. This allows your team to focus entirely on the dynamic, fast-moving transactional data when it matters most.
4. The Power of Multiple Environments
Never push converted data directly into your live production database without a safety net. A robust property onboarding strategy involves multiple database environments:
- Dev Database: For the technical team to build and tweak extraction scripts.
- Verification Database: Where the client reviews the raw data for accuracy.
- Test Database: A "sandbox" environment where your operations team can practice.
- Live Database: The final destination.
Using a Test Database is crucial not only for validating numbers but also for testing processes. For example, the trial balance might match perfectly (Data Verification). Still, if you attempt to process a move-out refund and the system fails due to a missing link to the vendor file, your data is unusable. Always test the use of the data, not just the data itself.
5. Managing the "Go-Dark" Period
Every successful migration requires a "Go-Dark" or "Blackout" period, a few days when no entries are made in either the old or new system. This ensures that the data you extract is static and matches the final trial balance.
Things to Look Out For:
- Communication: Inform your Accounts Payable and Leasing teams well in advance. If they enter a new lease during the blackout, it may be lost.
- Licensing: Before you start, verify that your current Yardi or MRI license count supports the new units. You don’t want to hit a system limit during the conversion weekend!
- Cut-Offs: Plan for multiple cut-offs. For example, you might stop AP processing on Wednesday, but allow rent receipts until Friday.
6. Cleanse Data Before You Migrate
There is an old saying in data science: "Garbage in, garbage out." If the legacy system has duplicate vendor records, expired lease charges that remain active, or messy "Management Lost" notes, those errors will carry over into your new ERP.
We recommend performing a data health check before the extraction begins. Look for:
- Duplicate tenant records.
- Inconsistent address formats (e.g., "St." vs. "Street").
- Negative deposit balances that should have been written off.
Cleaning data in the legacy system is often easier than fixing it after import.
Conclusion: You Don't Have to Do It Alone
Onboarding new properties is a significant effort that requires coordination among the client, the software vendor, and the implementation team. As our case studies show, even projects with compressed timelines shrinking from 12 months to 4 months can be successful with the right automation and rigorous testing.
At Assetsoft, we specialize in taking the stress out of data conversion. Whether you are implementing a new instance of Yardi Voyager or scaling up your MRI Software environment, we act as your strategic technology partner to ensure your data arrives clean, accurate, and ready for business.
Ready to streamline your next property onboarding? Contact Assetsoft today to discuss your data migration strategy.

