Changing a pause makes no difference. Trimming a clip in the montage (which I presume you mean) will result in a short fade out at that clip boundary. This means at that fade out that WL will calculate in its 32f resolution. Theoretically this should be reduced to 16 with dither before going to CD. IMO, in practice, it means I’ll decide by the type of music whether I find it really necessary.
BTW, fogot to mention: use the bit meter. It tells you exactly how many bits the current audio is - play around a bit with it (change the master fader a bit) and you’ll see what internally goes on.