I searched the community and have not found a satisfactory answer to this question.

I am part of an organization which has multiple SAP ERP Finance systems which have been acquired through multiple mergers etc.  Now my organization would like to consolidate all of our travel and expense via a single Concur Entity.  In order to do this, we would have to gather our cost centers / internal orders WBS elements etc. from multiple SAP ERP systems.  We would have to gather employees from multiple SAP HR systems.  The expense reports would have to post to different SAP ERP systems depending on company code.  Now, I have worked with Concur for over 15 years via SFTP flat files and I know that a single Concur instance expects a single List file, a single Employee file and will only send a single SAE for that instance.  Does the same restriction exist when using the SAP Concur Integration method.  Can we only integrate to a single SAP system using this method or can we send and receive from / to multiple ERP and multiple HR systems.  

Or is the only solution to fall back to flat files and thereby control that way.

Thank you for your insight.