Wrong BA results

[AD34G]

While trying to execute BA, I noticed some weird behavior :

Using items 0-39 resulted in the same outcomes as the original game, at least from those I've tested (lens -> megaton hammer, green potion -> current adult trade item, blue potion -> current child trade item, bottled fish -> deku nuts amount)

Getting items on B from an "amount", either using ammo like deku nuts, deku seeds and bombchu, or using trade item BA (for example, hylian shield + deku shield + biggoron sword + mastersword + deku sword -> Claim Check on B) worked as intended

However, using any item with an ID >39 lead to a few strange, varying results :

• if I RBA goron mask with the "restore RBA" option active, it works as intended and affect boots and tunics. Same goes for the zora mask, If I RBA it, it changes the swords and shields.
  But, the result from a goron mask BA depends from the swords and shields, while a zora mask RBA depends from boots and tunics.
  It seems these two had their results swapped.

• It's not a unique case, as pocket egg's and pocket cucco's results have been swapped as well.

• The broken sword seems to have switched with the odd mushroom.

• Generally, it seems BA results are somewhat similar to the RBA results one would get without the "restore original RBA" option.

From what I understand, it was possible to restore original RBA outcomes without completely changing the code (stuff like SRM and other memory manipulation glitches are much more complicated), so I was wondering if this was possible to restore as well, as I'm not really knowledgeable about N64 programming, and can't do much more by myself. Judging by the fact BA results are similar to those from RBA before the restoration, maybe the restoration code could be used here as well without too much change?

Thanks a lot!
(I also tried BA without the restore RBA option, just to be sure, and it didn't seem to change anything)