The convert_gids_to_sgids method resolved GIDs globally and minted
valid SGIDs without verifying the record belongs to the importing
account. This adds the same account_id check that the export path
already has, plus RecordNotFound handling for invalid GIDs.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
ActionTextRichTextRecordSet now calls check_associations_dont_exist to
ensure imported ActionText records only reference records within the
same import, matching the behavior of the parent RecordSet class.