Migrating users and groups (referenced by project) in JCMA 1.5.3 experience lack of performance

Issue Summary

Migrating users and groups (referenced by project) in JCMA (version 1.5.3) experience lack of performance.

Steps to Reproduce

1. Create a migration plan
2. Choose "Only users and groups related to the selected projects" option
3. Start the plan

Expected Results

The migration performace is as good as JCMA 1.5.2

Actual Results

User group migrations take much longer

Workaround

Use JCMA 1.5.2