Grafana API importing dashboard in folder

Hi,

I got two server that i want to synchronize to have the same folder and dashboard.
Server who export is in 8.3.5 version and the one who i import is in 7.5.15.
So i export and import the folder and everything is fine, but when i import the dashboard, they all go to the “general” folder and dont understand why, evend if i change the folderuid in the meta key.

Can you help me ?