I just got an answer from zeta on the lost sailors telling me that no data exists on the two sailors that I lost. Took him over two months to tell me that no data exists on either of the sailors, even though I have screenshots proving otherwise.
One was Super Elite Fighter based Seaman that was lvl 105 and over 220 vets, other was base 12 boosted KM db.
Spent money on both, including vets, boosts, and all the time wasted lvling them up.
Only to get this answer.
Ridiculous but not surprised at all. Will not spend another dime on this game ever, since this is how you handle problems like this.