Alexander Pavlov

Resolves: *https://github.com/musescore/MuseScore/issues/8601* *Fixed the following bugs:* - Not possible to change cross notehead after opening gp file - Parenthesis instead of cross in tab notation - [x] I signed [CLA](https://musescore.org/en/cla)...

Resolves: *(direct link to the issue)* *(short description of the changes and the motivation to make the changes)* - [ ] I signed [CLA](https://musescore.org/en/cla) - [ ] I made sure...

styles of dashed lines made equal to ottava sign style

2

Resolves: *(direct link to the issue)* *(short description of the changes and the motivation to make the changes)* - [ ] I signed [CLA](https://musescore.org/en/cla) - [ ] I made sure...

fixed creation of KeySig and treated situation when segment is nullptr

gp-import: fixed octava import when gp file is bugged

2

fixed behaviour when guitar pro file contains random octava signs on rests (bug of guitar pro)

fixed position of palm mute below/above the staff (pay attention to simple tab staff type) Current behaviour:  Expected: 

gp-import: fixed import of ties when octave sigh is present

1

Current behaviour:  Expected:  [octave-regression.gp.zip](https://github.com/musescore/xtz/files/10420885/octave-regression.gp.zip)

Current behaviour:  Expected: