Does Speed Swap transfer gains from Surge Surfer?

Question

If Alolan Raichu performs Speed Swap while under the effects of Surge Surfer, does Raichu-A's speed before or after considering the benefit of Surge Surfer get applied to the target of Speed Swap?

Answer 1

Test n1: no terrain
Test n2: terrain
So, after agility, Dragapult has 698 speed, and Raichu has 350, so Diancie is still slower. However in Electric Terrain Raichu has 700 speed, meaning it outspeeds dragapult. However it still moved before Diancie, so it seems like ability modifiers don't affect Speed Swap at all.