Fix archive template selection in campaign creation query.

queries.sql

@@ -474,7 +474,7 @@ counts AS (
 ),
 camp AS (
     INSERT INTO campaigns (uuid, type, name, subject, from_email, body, altbody, content_type, send_at, headers, tags, messenger, template_id, to_send, max_subscriber_id, archive, archive_template_id, archive_meta)
-        SELECT $1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12, (SELECT id FROM tpl), (SELECT to_send FROM counts), (SELECT max_sub_id FROM counts), $15, $16, $17
+        SELECT $1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12, (SELECT id FROM tpl), (SELECT to_send FROM counts), (SELECT max_sub_id FROM counts), $15, (CASE WHEN $16 = 0 THEN (SELECT id FROM tpl) ELSE $16 END), $17
         RETURNING id
 )
 INSERT INTO campaign_lists (campaign_id, list_id, list_name)