Guild Wars 2

I was on earlier today and I could have sworn and I’m 100% sure I did explore some parts on the map…

Briban Wildlands to be exact and I logged off for a bit.
I came back a few hours later and Everything (or most) of what I explored resetted?

I tried looking on here if anyone posted it but I didn’t see it :x. . on the first page..
So yeah… It rollbacked twice that I am aware of.

Anyone else have that problem?
Makes me not want to play since I end up rolling back :\

Oh and to add — My level is where it was before because I just recently leveled so It should have rolled back too but only my map had a roll-back . Not sure about my inventory since I always send it to the bank and I’m not near the bank so Idk if anything is missing.