Using Genshin Optimizer format will delete character data on GO.

[frzyc]

Unfortunately, the logic for the import of GO format is to overwrite the database.
Since you are generating a fake GO data that doesn't have character data, it will wipe the character data on import.

We support mona-uranai format as of v5.21.0

The recommendation right now is for cocogoat to output mona-uranai format for the "Genshin Optimizer" export option. In that case, Go will do a database merge, and no character data will be harmed.

[frzyc]

As of Genshin Optimizer v6.1.2 Genshin Optimizer officially accepts data in the form of the Genshin Open Object Description (GOOD) format. The documentation for this format is currently hosted here.
The recommendation now is to use this format for cocogoat's GO output..