A space or page XML export does not contain Easy Form definitions for the forms or fields. It also does not contain the user submissions. That data is persisted in the database. The migration of Easy Form data requires the migration of the data in the database.
We are not aware of any Confluence tools/APIs that facilitate migration of AO data.
Active Object (AO) database tables are named with the prefix "AO" followed by a 6 character hash, "4025C4" and then the name of the object. The underscore ("_") character separates the parts of the name.
The names of the tables containing Easy Form AO data are:
Data migration is only necessary if you want to preserve old submissions
User submissions for fields on the forms, FK to the submission table
Transforming User Keys
A username is unique on an instance. A username will be the same user on your source and destination but, depending on how you migrated your data from source to destination, your user keys that are mapped to those usernames may not be equal. The user keys might be different on your destination.
See the USER_MAPPING table:
The USER_MAPPING table maps a user key for each username. You will want to set the user keys in your Easy Form tables on your destination instance to match the user keys as used on the destination instance.