Hey @srosales712
Thanks for the additional information! :qiime2:
So I personally don't have a lot experience merging 2 different primers but I looked into posts on the forum and I think I found some interesting discussions that might be better then dereplicating again.
This post seems like it is doing something very similar to what you are doing
This one is a little older but has some interesting discussion on it( although I don't think as relevant )
Both mention and link to Fragment insertion. Here is another link .
https://library.qiime2.org/plugins/q2-fragment-insertion/16/
Let me know if this is helpful or if I am way off the mark.
Chloe