issue after moving vacuum to other Wifi network

[leonidas111]

Hi,
I use a Dreame Z10 Pro with valetudo last release.
Initially I configured the device to use one Wifi network and after that I changed my mind and moved it to another one (reset Wifi by pressing the 2 buttons and adding the credentials for new SSID)
It was working ok, I could access it in the second network. But after a few hours I couldn't access it anymore. I thought it is broken.
I checked the Wifi router and I discovered that the vacuum was connected to the first network. Funny thing. From that time, the device is changing the network from time to time ...
My questions are:

1. Does the device store every single Wifi configuration? I thought it stores only the last one.
2. If yes, how could I keep only one Wifi configuration and delete the other?

Thanks!

[Hypfer]

Does the device store every single Wifi configuration?

Yes. That's a dreame quirk. No idea why they do that

If yes, how could I keep only one Wifi configuration and delete the other?

Delete the old one from /data/config/wifi/ap_config.json via ssh.
Make sure that it is valid JSON after editing it.