Converting the Elements Organizer 13/13.1 catalog in Elements Organizer 14/14.1 should not interfere with Elements Organizer 13/13.1 catalog. The Elements Organizer 13 catalog will continue to exist as original after that conversion, typically now the name of that 13/13.1 catalog has a number after the conversion.
Consequently, you should end up with the Elements Organizer 13/13.1 as a catalog opening in Elements Organizer 14/14.1 and the original Elements Organizer 13/13.1 catalog, content as before.
If you have any slideshow projects in the 13/13.1 catalog, during conversion they will be accepted by Elements Organizer 14/14.1 only after you agree to allow your 13/13.1 slideshow format to be converted to the new 14/14.1 format which is dramatically different.
Please consider. If you have any questions or need clarification before you do the conversion, please stop and ask.