I encounter the same problem when trying to import xmi files from ORACLE JDeveloper. Any suggestions how to solve these problems are welcome.
I have a xmi file (version 2.1) from IBM IAA, when i try to import it into ABA i got the error "The file is not a valid XMI file."
Do anyone found a resolution to this issue?
I too am struggling with importing IAA in to ARIS. How far did you get?
To assist others who may find this thread, your issue is that ARIS only supports XMI1.2 while MMM/IAA only exports XMI 2.1 hence the ARIS error message (which you mention in your other post)
I am looking at translating via an intermediary modelling tool that can managed the 2.x->1.x downconversion which looks like it will work.
Biggest remaining hurdle is that ARIS seems to ignore XMI diagram information and just imports the objects leaving a user to recreate all of the diagrams! That's tons of work. This seems to be confirmed by exporting XMI from ARIS as it does not create any Diagram information, just object metadata.