Sage 2017 upgrade. We did a Sage 100 and CRM upgrade to 2017 on a test. Remigrated data to Sage (no system files remigrated on second migration into as test install of Sage100 become live install - think this is the base of the issue). CRM guy did his part reinstalling CRM. CRM guy now trying to resolve why Sage CRM not talking to Sage 100 (which seemed to be working during tests). Any info on the issue and what I could have done differently and if can solve now would be appreciated. Using Sage integration (not greytrix)