Help! Part #49 not in R/M B-17 kit.

I’m building the R/M B-17G. I have the Eduard PE interior detail kit which has me trim off the piece on the floor (kit part #21) for the bomb sight mount. Kit part #49 is to go there after I add the PE parts, however there is no #49 in the kit. I’ve already trimmed the floor and added the PE parts. Am I SOL or did Revell combine parts #49 and #50 and not change the instructions? TIA

they combined both parts and forgot to update the instructions.