I don't think anyone wants his F bank completely blanked out if they already got stuff in it. Aside of that, you should take my words or run an IPS log by patching a clean ROM and you'll see by yourself.
Edit: you should not patch from a vanilla ROM because applying the patch will erase everything in the F bank aside your song. You should take as a patch clean ROM an expanded ROM. Also, there's lot of bytes changed in the C, D and E banks and it should not be the case. Make sure you start from a clean ROM, as it is now, you patch is almost as big as the clean ROM, it's the proof that data is shifted or something.
Edit: you should not patch from a vanilla ROM because applying the patch will erase everything in the F bank aside your song. You should take as a patch clean ROM an expanded ROM. Also, there's lot of bytes changed in the C, D and E banks and it should not be the case. Make sure you start from a clean ROM, as it is now, you patch is almost as big as the clean ROM, it's the proof that data is shifted or something.