It should be possible to import previous versions of Guitar Pro (such as the .gp3 files from version 3) and re-save them to the latest GPX format. Probably done by the default File ► Save as.. function.
Convert Guitar Pro 3 project to Guitar Pro 6 format.
We have found one software suitable in our database for this conversion.
Microsoft Windows software - convert gp3 to gpx on Windows
A professional multi-track editor and music composer. Musicians uses Guitar Pro to create guitar and bass tablature. Also is used to write musical scores. It is available in versions for Windows, Mac, Linux and iOS.
Convert from gp3 file
to gpx file
|Yes, Guitar Pro supports gpx file conversion as a target file type.||Yes||Yes||gpx editor||Yes||No||No||No|
The table with program actions contains information about what each program is capable of doing with their files. This may be a good pointer for further searches for certain file conversions and help you find the converter you are looking for if our search result is insufficient for you. However, it is far from perfect and may sometimes show results which are not really usable because of the nature of the software handles the files. So a conversion that appears as possible, just because of matched actions, may in fact not be possible.