Is there a way to manually import masterkey to andrioid?

My android client has “completed” the synchronisation at 16+ hours before, but up to now it is still Missing The Masterkeys, and if I create a new note on andriod device, it will successfully sync to the PC and shows “completed”, but in the meantime still keep showing Missing The MasteryKeys.
I know I have to wait it to sync the mastery key, but it seems endless. Can I manually find the mastery key file and import it to my android device?

Unfortunately you have to wait the end of the sync process. You can check if all object are synced, with the status window which will display the number of objects and its sum
So you can conclude if it’s finished or not.