As I’ve said twice, the recent additional BKK and KUL flights are transporting materials for the automotive industry in North America. All of these aircraft go straight on to GSP, ATL, YHZ or ORD. The occasional GLA flights are separate, as are the BKK/KUL flights with the usual (old) flight numbers.
There’s very little PPE being brought in these days, most of the COVID related cargo from the Far East is things like testing kits. There isn’t a PPE shortage any more so it’s not urgent enough to be carried by air on mass.