I am getting this message trying to Upgrade Forms and it displays 3 keys to choose from.

Double checked in Directory Server that only one Application instance exists for Forms and no option to choose this instance by it's guid or upload a licx file and continue the installation.

It should be impossible to have a single instance licensed with more than one key and if it really is licensed with 3 keys, then give me an option to keep all 3.

The connection between licensing and version upgrading is not necessary. With all other LF Services we can upgrade without any licensing. Licensing is only necessary for a new installation.