Is Photoshop Elements 2020 compatible with older versions of Premiere Elements?

I currently own the Photoshop Elements 15 + Premiere Elements 15 bundle.  If I upgrade just PSE to 2020, will it work OK with PE 15?  Will the Organizer get upgraded to 2020?  I wish Adobe would publish compatibility information between different versions of these products.  I seem to recall having problems upgrading just one of the two in the past, and don't want to have that trouble again.  If I download the trial version of PSE 2020 and install it, will it mess up the version 15 I already have installed?  If I try it for awhile and don't like it, how do I revert back to 15?  I'm on Windows 10 (fully updated).  Thanks!