Jean-Marc's comment needs one small addition: numbering is chronological on pages, but across pages it is correct. That makes fixing the numbering a bit easier.
Barb's suggestion works fine if you can thread the frames that contain the numbered paragraphs. But if you can't (or don't want to, because adding a frame somewhere can be a hassle), then you can use this script to fix the numbering:
https://creativepro.com/files/kahrel/indesign/paragraph-numbering-fix.html
Before you use it, save and store your documents in a safe place to be on the safe side. I've used the script in one text only so far, and it works well in there, but be careful.
P.
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