Logic Pro: Music XML export drops guitar notes

Mac studio m2 max, tahoe 26.2, logic pro 11.2.2, exporting guitar tablature partition to music xml format drops many notes, seems like limited to notes of 2 of the 6 channels ( 1 channel per string for a classical guitar ), I got this escalated but wonder if many user have the same problem, (apple support was very nice and comprehensive btw)