Merging library and catalog from laptop to desktop on a Mac running different operating systems

[stidik]

Are there any problems merging a Lightroom Classic catalog and library from a laptop running Catalina to a Desktop computer running Mojave? My laptop is new so my only choice for an operating system is Catalina, and I use my laptop for travel.

{Moved from Lightroom Cloud to Lightroom Classic Forum by Moderator}

[JohanElzenga]

No, there shouldn't be any problems. The system version has no influence on the catalog.

[Geoff the kiwi]

No problem at all... I don't know how you work between the two but I have for years kept may catalog/s on an external drive with presets stored so it is plug in to either and the catalog is up to date. 

I usually have my image files on a seperate external drive/s as well!!