Parallels 13 automatically changeing network settings

I have a Windows 7 VM and set the network to Default Adapter. Everything works. Sometime the setting change automatically to Shared Network. I dont no why.
So i check every morning the setting, becaue some software needs the right ip adresse in our network. I try to use the lock in the corner but nothing change.
Why did Parallels automatically change the setting in the networkkonfiguration?

 

Please let us know your Mac OS version. And from when are you experiencing this issue?