there are several tabs of classical guitar pieces that are really hard to find on guitar pro tab, is more frequently to find them on power tab, I have downloaded a couple of those, mateo carcassi op 60. no 2 and antonio lauro valz venezolano no. 3 to be exactly, and I have imported them to guitar pro, the problem is that I cannot see some notes, in the tablatures they appear as a blank space and in the partiture like a silence, but they're not a silence if you press play to the tab you can hear the note this is happening with the bass notes.

anyone else have experienced this? what can I do to solve this?
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do you wanna hear a little piano composition I have just made?, I promise it don't totally sucks, you can hear it on my profile, any feedback would be really appreciated -C4C