Will it
ever be possible to manually enter a callsign/band/mode into the
worked B4 database, that for one reason or another does not go
away in normal operations? I usually just work them again and all
is good.
No, very unlikely.
The worked B4 cache database is memory based. It is lost whenever
JTAlert is restarted or the cache is explicitly cleared. When the
cache database is cleared or empty JTAlert performs inital B4
checks against the enabled logger. If you make changes to your
logger QSOs or delete QSOs while JTAlert is running you will need
to either clear the B4 cache or restart JTAlert.
Do not confuse this with the B4LogV2.mdb file use by "NO Log"
users which acts as a minimal log, it is not the B4 cache
database.