Normally, another recompose should not be necessary.

It could just be, though, that if you’ve renumbered, some number might have gone into double-digits (or some double-digit numbers might have turned into single digits), since you’re restarting each page.

And if that is the case, occasionally this can cause some lines to reflow onto another page.

If that happens, you would need to recompose from that page onwards again. But it’s fairly rare that this should happen.