[catwhowalks]

Quote:

Originally Posted by Kamen Rider Die

Yeah, the Decade RideWatch seems to have completely different principles behind it than the other RideWatches. Nothing in Tsukasa's arc says that he's not the same guy we knew in the Decade series, down to his power set and (enhanced) Driver. I definitely took him as having all his old memories.

I should point out that it's the existence of the Another Rider that removes their memories, not the presence of a RideWatch. There is no Another Decade here, so he is never replaced. There's a bit more than that, but I can't say at this point, but the lack of an Another Decade is enough to explain the lack of memory loss.