How to change key for plots while farming


I have 62 plots, 30 of which is propoer, with current key, while 31 of them has a key of my previous wallet.
I managed to add the previuos key to them via chia add key command ( or something similar) and the show ok in chia plots check.

However, they ( the plots with previous key) are not farming. I check : chia farm summary and it says only 30 of may plots are farming.

Is there a way to add key to farmer? Or something else to make them farm?

1 Like

should you remove the old key with chia key delete ?