Italian AP reverse charge created positive and negative tax line, but failed to in accounting lines

Hi Tax Guru,

Would appreciate your input. We created Italian reverse charge wtih negative tax assigned into positive tax and we are able to successfully create 2 tax lines reversing each others. The tax calculated is correct! however, we are enountering weird behavious on accounting generated out of these 2 tax lines. Sometime it will working fine by giving you 4 tax accounting line which cancel out each others and this is what we need it. But in some other cases, it will only generate 2 tax accouting lines also net off each other. Although the net effect