EDIT: Solved the unit problems myself, found in another thread that the "weird" unit count duplicate units (
https://imgtc.com/a/wbGaA4J) seem to be by design.
Another problem I have is with AUM. DME already contains a 2010 DME_AUM version. Do I just replace that with the DME_AUM from their download page? According to the instructions I also need to replace the DME UPC files with the UPC mod version. But the DME UPC file names AUM tells me to replace differ. Do I replace DME_UPC_v6_3.pack with UPC_English.pack?