I also did a 2019 install onto a new desktop a couple of months ago. My previous version was 2018 on a Win 7 laptop.


In my case, I did not install any previous version onto the new desktop, a Win 10 AIO, I installed 2019. I started as if 2019 was my first purchase of the program. After the initial installation I installed Xtra Paks, 49 Bonus Paks from the CD's I had retained from all my previous versions and purchases and downloaded a few bundles that I did not receive a CD for. My result was I ended up with the correct total of RT's on the desktop. I was prepared to copy the RT's from the laptop to the new desktop if necessary but everything ended up correctly on the desktop. I did not use the installation manager.


BIAB 2025:RB 2025, Latest builds: Dell Optiplex 7040 Desktop; Windows-10-64 bit, Intel Core i7-6700 3.4GHz CPU and 16 GB Ram Memory.