Hi,
Well, the annoying
XRef Object Merge: Units Mismatch warning window is something already reported to Autodesk (as you can see for example on this "
Max 2016 xref units mismatch error" Autodesk's Knowledge Network site or mentioned on our forum in other posts like the "
2016 issues"), but unfortunately it doesn't seem there is a possibility to avoid that "confirmation" step.
A possible option for some situations would be to disable the
Respect System Units in Files option under
System Units Setup, but that's not always desirable.
Optionally, you can change the
Units Setup for those scenes containing used objects to match your actual project units settings.
Unfortunately, as this issue isn't related to our plug-in at all (it'll happen in any scene using several XRefs that doesn't match the scene unit set-up), we can't do much more in this case. Thanks for your comprehension.
Best regards,