Troubeshooting: Finding missing transactions?

Other than topheight, what might cause a transaction to show missing after a scan?
And what is the best course of action to get the wallet to see those missing transactions?

(This is in ref to Atlantis.)

How can you say, you have missing TX.
Any proofs, logs etc. ?

I have a log in TradeOgre for 1114 Dero transferred on 03/26/23, but this has not appeared in Stargate. The funds I used to have in Atlantis are there so I think my Stargate is working. I would sure like to know how to “track and trace” this.