Managing Fabric Data Pipelines: a step-by-step guide to source control and deployment

Thanks, Eduardo_Noriega and Ana_Maria_Garcia for the detailed deployment steps for Data pipelines in MS Fabric. 
I have a question. After deployment to Test and Prod, you say you can change the connection setting in each of these Workspaces so:

1.  Will my next deployment from Dev to Test to Prod overwrite these connections and hence I have to change the connections each time I deploy?
2. If it does change, is there a way to bulk edit if we have number of places, it needs change?

Would greatly appreciate your help here.

Thanks,

Amrutha