journal invoice issue

Hi,

we don't have an issue but unexpected behavior on the result.

we had two invoice transactions which have tax on both. the tax line on invoice workbench are generated by system.

if we look on invoice workbench, there was no difference in both of transaction but if we look the journal (Tools > View Accounting Events), for one invoice, tax are separated into different line with accounting class Liability and the other one, tax line are included so only one line accounting class Liability with amount are summary.

why the journal result are different ?

Regards,

Suryadi