Did you know that you can change your default search ? The standard search in eXpd8 is by file name but you can change this to file code if you wish.
In the standard search screen, put a tick in the File Code field. To retain this as your new default, exit eXpd8 and when you reopen, this will be your new default.
What to reverse that? Simply remove the tick, exit the software and upon reentering, your default will be back to searching by file name.