@agreeable-answer-99206 it sounds like you want to import resources from an environment, prod, and create a dev environment. You could do this by:

pulumi stack init prod
# your import steps 1 & 2, skipping deletes of URNs
pulumi stack init dev
# assuming you aren't already using a stack named dev 
pulumi up

The dev stack will not have any state associated with it, and using the code generated by import will create new resources for any new environments (stacks) you create.