Expenses Article 44

I am in the same situation. In that case, I calculate the amount excluding vAT myself and fill that in, but I am also curious about the answer to this question.

Just fill in the same amount excluding and including vAT.

I asked support, and the explanation is:

For VAT-exempted users, Dexxter thought it might be useful to do later analyses on how much the VAT impact was when you were subject to VAT. For non-subject to VAT entities (i.e. Article 44), it is not useful, but it is simply technically easier to keep the input consistent with other profiles. However, between the lines, I also read that they may address this in the future.