Migration Manager for Active Directory

QMM AD: Testing Lync attribute migration using Source/TargetLyncSupport.xml No MSRTC attributes in sync

Exchange has already been migrated.  The source accounts still have MSExch attributes which are being excluded from the migration.  Migrating Lync-enabled test accounts with either SourceLyncSupport.xml or TargetLyncsupport.xml add-in doesn't result in MSRTC* attributes being migrated.  What am I doing wrong?