PSA: Traveling between regions recharges "On long rest" abilities

I just found this out while playing on Tactician. I'd exhausted pretty much all of my resources right as I got to Last Light Inn (notably some of my abilities from gear that recharge on Long Rest), and was getting ready to go take my first long rest of act 2 when I remembered that I forgot to kill Lump for his headband. So I fast traveled to Grymforge and realized all of my "on Long Rest" abilities had recharged, such as Singing Sword, amulet Scorching Ray, etc.

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Not sure how this could be factored into builds necessarily, but it's definitely useful for just pushing through certain portions of the game when you can't afford to or don't want to rest.

Hope it helps someone!

EDIT/UPDATE: I did a small amount of testing and found out that if you unequip the item you recharged before expending its new charge, the charge will disappear!