Reply To: several text frames, only one footnote part

Yes, i have 2 different text frames.
i Convert footnotes to sidenotes (with sidenotes.jsx by Kahrel) just for the first text frame (i wanted them detached from text frame) , then i manually copy&paste it before the first footnote in the second text frame below.
then i set numbering footnotes from 3.
i know that, this is not a good idea, but i had no choice, except you guys help me. i need it.