Simon,
There were no reports of problems with the d/b routes until the July update thats why I suggested the May one would have been correct. Using the db.3 back up would have given you the same result.
The July one does contain additional aircraft so its up to you whether you use the July or May one.
As I stated previously Airnav are working on the new Navdata which will hopefully include the correct d/b routes and airport tables and should now be out sometime next week, all going well. As we only update the aircraft table that is what we check is OK but we will check all tables are OK from now on before giving Airnav the go ahead to release.
Alan
Alan