Hi @PulseAmit :
There are a couple of ways to achieve this. One way would be to define the Service URL and HTTP header(s) as pipeline parameters, and then expression enable those fields in the REST snap referencing those parameters (ex: _serviceurl for serviceurl pipeline parameter). You would then update the pipeline parameters of the pipeline you copied to the other project.
Another way, albeit a bit brute force, would be to export the pipeline, modify the field values in the exported json, and then import the modified pipeline into the other project folder.
Let me know if you want more details on either. Others may have craftier solutions.
