If you want to import former Guitar Pro user sound presets in Guitar Pro 7.5 (from Guitar Pro 6 for example) please:
- Open Guitar Pro 7.5
- Go to the Track Inspector
- Select the name of the sound for the current track
- Select Manage user sounds presets... from the dropdown menu
- A new window will pop.
Either File Explorer on Windows or the Finder on macOS.
The right location should pop up automatically.
- Place your presets in the My Sound Presets folder.
You'll then have the possibility to access these user sound presets from Guitar Pro 7.5.