Transaction group is active but doesn't execute


I am actually facing a problem with transaction groups.
We have a server on which are running transaction groups and writing values on another server through SQL Bridge. When we loose the connection to the database (SQL Server) there is no way to retrieve the datas because the Store and Forward cache is empty. When the DB connection returns to a valid state the transaction groups are valid but they don’t execute. The only way to make them work is by reseting the Gateway. Anyone ever encountered the same problem? I’m thinking to upgrade Ignition to 7.6.7.
Ignition is running under the 7.6.4 version on this server.