Softcorner guarantees the buyer the complete documentation when transferring the license:
Proof of purchase
This is usually the initial purchase invoice as well as any invoices for version updates that have been issued by the software publisher or its distributor. This document must explicitly reference the license that is the subject of the transfer.
Proof of renewals
If the version that is the subject of the transfer of license is different from the one mentioned on the proof of ownership, then the right to run this version must be demonstrated. In this case, maintenance invoices up to the official release date of the transferred version must be provided.
The contractual documentation
This is the license agreement, standard or specific, as well as any subsequent addendum that would amend the content.