Migrating existing content from Disc-based SimCity 4 to GOG install

[mertzigzag 48]

The planned obsolescence hammer is about to come down on my still perfectly functional Windows 8.1 PC, so I'm being forced to update to Windows 10, and with that, my ancient disc-based copy of SimCity 4 will presumably stop working (due to the well-documented lack of SecuRom support).  It's been well-documented here that the best path to keep running SimCity 4 is to buy the GOG.com release, which I've done (only $4.99 right now!), so thanks everyone so far for the tip on that... but now I'm puzzling over how to actually carry out migrating 15 years of saved games to a new install using the GOG.com build.

Is it just a matter of installing it and then simply dumping in my plugins folder and saved regions? Or is it a whole lot more complicated than that?  What tips and tricks, or known gotchas, do folks have to share for moving from a disc-based SimCity 4 installation to using a GOG.com distribution? What have you done to succeed in keeping all your previous stuff intact?

[Tarkus 6,932]

If you're installing the GOG version onto the same PC, it'll reference your existing Plugins and Regions folders in the Documents\SimCity 4 folder, so there's actually nothing to do there aside from just installing the digital version of the game. 

If you're migrating to a new PC, you'll want to copy the Plugins and Regions folders from within Documents\SimCity 4 over to the Documents\SimCity 4 folder on your new system, after installing the GOG version of the game. 

-Tarkus