There was no exclusion of redeposit fees on awards originating from outside NA prior to Covid that I'm aware of (unless you had Plat or higher status) and I believe the $150 fee applied to all awards no matter what the origin other than for those with Plat+ waiver.

There is mention of $150 redeposit fee for awards originating outside of NA on this page -- https://www.delta.com/us/en/baggage/overview

"A redeposit fee of $150 will still apply for Award Tickets and mileage upgrades for travel originating outside of North America."

There are a couple other recent threads on this topic (unclear if this is actually being enforced or if it depends if you do it online or with an agent).