It's possible ... I don't remember offhand which table I pulled XSNs from, but I thought formentry_archive was an old (deprecated but not removed) table. There should be an "archived" column in the formentry_xsn table. If you imported an old version of the table, you might need to update the database schema by hand or do some magical incantations to run chunks of the upgrade process. The table description should look like this:
mysql> desc formentry_xsn;
+------------------+----------+------+-----+---------------------+----------------+
| Field | Type | Null | Key | Default | Extra |
+------------------+----------+------+-----+---------------------+----------------+
| formentry_xsn_id | int(11) | NO | PRI | NULL | auto_increment |
| form_id | int(11) | NO | MUL | NULL | |
| xsn_data | longblob | NO | | NULL | |
| creator | int(11) | NO | MUL | 0 | |
| date_created | datetime | NO | | 0000-00-00 00:00:00 | |
| archived | int(1) | NO | MUL | 0 | |
| archived_by | int(11) | YES | MUL | NULL | |
| date_archived | datetime | YES | | NULL | |
| uuid | char(38) | NO | UNI | NULL | |
+------------------+----------+------+-----+---------------------+----------------+
9 rows in set (0.02 sec)
If it looks different, let me know ... I might be able to get you a few lines of SQL to get you up to speed.