Production on CRM 2016, Dev on D365 - Full Copy

Hi,

I have CRM Online 2016 on Production. I have D365 Online on Development environment.

Now, if I do a "Full Copy", CRM 2016 Online to D365 Online, will the Dev remain D365 Online and keep the customization and data from CRM 2016 Online that came from Production?

Please advise.