Hi Shawn I have a similar problem, I created password backups, but no .dat file and have done restore. I got my fullnode from the Zcash winzip from the Zcash website, can this old wallet be restored using just the passwords through these?
Solved this problem by installing Linux as the main OS. Now full node(Zcashd)is up fully synced and running.
However i still need help restoring a wallet through zcashd with seed or key. Where can i find wallet restore guides for zcashd?
Thx for the response.