Please try it now. Make sure to create a new match and DO NOT clone any previously created registrations. If categories and divisions are not transferred across. Email details to support@practiscore.com and include the match registration link.
Also note that if you are using an option in the app to import registration into a previously created match then divisions, categories, etc are going to stay as they are declared in that locally created match (and you can edit them in that match or in the custom match template match was created from).
It is possible, however once it is added that’s when the extra work starts. It has to be tracked regularly to verify if the sport is still alive and the match template is up to date with the current sport’s rules. We simply don’t have capacity do do that for all smaller sports.
You are better off with managing and distributing your own custom match template.
Not sure what systems are being referred here.