Tabs3 to MATTEROOM Migration Guide for Law Firms

Overview

A Tabs3 to MATTEROOM migration should protect billing continuity and financial integrity while giving the firm a controlled path into a new operating environment. Tabs3 may contain billing, accounting, case-management, payment, document, calendar, and conflict information. The exact migration scope depends on the products and modules the firm uses.

The MATTEROOM raw material explicitly warns against assuming Tabs3 is desktop-only because Tabs3 markets a cloud practice-management solution. Always document the current product, edition, release, modules, and deployment model before planning migration.

What the Source Supports About Tabs3

The raw materials describe Tabs3 as providing:

1. Cloud practice management

2. Billing

3. Accounting

4. Case management

5. Electronic payments

6. Matters

7. Calendars

8. Document management

9. Conflict checking

10. Optional CRM

11. Multiple rate and fee approaches

12. Customizable statements

MATTEROOM's supported positioning includes time, billing, documents, workflows, configurable legal accounting, analytics, Microsoft 365 integration, single tenancy, encryption, and migration services.

Phase 1: Inventory the Current Tabs3 Environment

Record:

1. Product names

2. Edition

3. Release

4. Cloud or other deployment model

5. Modules

6. Integrations

7. Client count

8. Matter count

9. Time volume

10. WIP

11. Invoices

12. A/R

13. Trust

14. GL

15. Payments

16. Documents

17. Reports

18. Custom fields

The source inventory becomes the basis for scope and estimates.

Phase 2: Classify the Data

For each domain, decide whether to:

1. Migrate full history

2. Migrate open balances

3. Migrate summarized history

4. Keep a read-only archive

5. Exclude

The decision should reflect operational, financial, audit, and retention requirements.

Phase 3: Map Tabs3 to the Target Model

Create explicit mappings for:

1. Clients

2. Matters

3. Contacts

4. Users

5. Timekeepers

6. Time

7. Expenses

8. WIP

9. Invoices

10. A/R

11. Payments

12. Unapplied cash

13. Trust

14. GL

15. Documents

16. Reports

Every unmapped or transformed value should be reviewed by the appropriate business owner.

Phase 4: Clean the Data

Before trial conversion, identify:

1. Duplicate clients

2. Duplicate matters

3. Inactive users

4. Old codes

5. Invalid rates

6. Missing currencies

7. Trust differences

8. Orphan transactions

9. Duplicate documents

10. Custom values that no longer have business meaning

Migration is an opportunity to reduce unnecessary complexity rather than reproduce it automatically.

Phase 5: Run a Trial Conversion

MATTEROOM's migration framework recommends a trial load before final cutover.

Test:

1. Extract

2. Transform

3. Load

4. Reject handling

5. Performance

6. Reconciliation

7. Reports

8. Integrations

9. Security

10. User workflows

Keep an exception log and assign owners.

Financial Reconciliation

Reconcile:

Do not move to go-live because record counts "look close."

Billing Configuration

Document the Tabs3 billing logic that must survive or be redesigned.

Include:

1. Rates

2. Fee arrangements

3. Statement formats

4. Discounts

5. Tax

6. Prebill process

7. Approval

8. Payments

9. Write-offs

10. Client-specific requirements

Run the firm's hardest bill through MATTEROOM during UAT.

Documents and Matter Management

If the Tabs3 environment includes document or case-management functions, determine:

1. Which documents move

2. Whether structure is preserved

3. Whether metadata is preserved

4. How permissions map

5. How matters map

6. Which information remains archived

7. How users search history

8. How email is handled

MATTEROOM's separate Microsoft 365 and OneDrive positioning can be evaluated as part of the target document design.

Microsoft 365 Workstream

MATTEROOM source materials describe Teams, Planner, OneDrive, and Copilot-oriented integration.

A migration can therefore include a future-state design for:

1. Identity

2. Matter provisioning

3. Teams

4. OneDrive

5. Outlook filing

6. Planner

7. Permissions

8. Retention

9. Search

10. Matter closure

This should be tested with the firm's Microsoft governance rules.

UAT and Cutover

UAT should cover complete workflows, not isolated screens.

Test:

1. Open matter

2. Enter time

3. Submit expense

4. Prebill

5. Final bill

6. Payment

7. Trust

8. Journal

9. Reporting

10. Documents

11. Microsoft 365

12. Security roles

Then define the final freeze, extract, load, reconciliation, access switch, communications, and rollback criteria.

Commercial and Timing Claims

The MATTEROOM source says pricing comparisons require current like-for-like quotes and comparable implementation scope.

It also cautions against universal "migration in hours" claims.

A responsible migration proposal should document:

1. Supported source environment

2. Data scope

3. History

4. Volume

5. Transformations

6. Documents

7. Integrations

8. Reconciliation

9. UAT

10. Cutover