I have a mid 2012 imac running Mojave and I have a windows 10 bootcamp partition running on an external drive. I cloned the partition and transferred it to a new iMac mid 2020 running Catalina. The transfer works but when I try and boot from the partition it fails - I get a BSOD.
The original bootcamp setup created from the new 2020 mac works and boots properly, but as soon as I replace that bootcamp with the wincloned install from the mid 2012 mac it goes to BSOD.