but as Terry said ... Hold some backups in a cloud or on several, not permanent connected, items and you have a chance to got all back if the computer fails and you need a new setting up of OS and all the software ... The easiest way for "no lost data" is to make several backups
73´s .. Juergen ... ALT-512 SDR (10W) , 50 m random wire at SG-211 autotuner, 2 x Xiegu G90 (20W HF TRX) one as portable Radio. Also TS-790E (40 W) for VHF/UHF with X-50 vertical and Duoband 4-Element LPDA.
There is a field, called QSO ID
this field is generated at IMPORT TIME
You should open log with one of the free sqlite editors, filter for QSO ID and remove all QSO in the same date range.
As an alternative send your log (DATABASE, not ADIF) to me and i'll check.
Pse refer to this thread on your mail so i can find the reason of your request
I solved the problem by using the qso end time field (the rogue qso's had that as blank
Jurgen - the files were recovered from dropbox, i accidentally added an adif from my old dxlab program which i used before switching to the best logging program around