Interesting question. I suspect the answer is yes but there perhaps needed to be some extenuating circumstances. Here is an example.
https://abmc.gov/decedent-search/de-bardeleben%3Dwillia
https://www.findagrave.com/memorial/...d-debardeleben
Note (according to the newspaper article) that De Bardeleben had transferred to the AAF but was to fly 5 more missions with the RAF.
The American pilot of the plane (Lancaster W4892).
https://abmc.gov/decedent-search/solomon%3Dfrank-0
https://www.findagrave.com/memorial/...rank-b-solomon
There is a MACR for this loss:
https://www.fold3.com/image/28735193 or here:
https://catalog.archives.gov/id/91061725
The MACR notes the two men were on detached service (to the RAF) from 12th RCD so they probably had to have initiated a transfer to or enlistment in the AAF to get on the AAF books.
Note that this site does not list the two Americans on the crew:
http://www.rafcommands.com/database/...php?qnum=17289
An American just continuing in the RAF or RCAF probably could not have been "transferred" after his death. He would be in a Commonwealth grave.