Hi,
yes there is a tool for this in the Utilities Menu.
You have to use Utilities / Groups / Group to session file.
You select the groups you want to export, set a file name for the group session file to create and click APPLY.
Then after opening the database where you want to import your groups in, you run the group session file you have just created using menu : File / Session / Play...
Regards
thejackk