Questions on ICS

Summary

Looping and document structure

Content

I have few questions here.

1. Is it possible to add new loops in between the flow if we tend to miss the loops  while design?

 for Example: i have designed an integration for uploading a file to HCM cloud  and suppose now i want to add a for loop to check the file count. ..( I am able to add loop but the rest of the integration is out of the iteration) 

2. In the mapper activity, if i delete should i redo the whole map or is there any way, i can edit the map from the exported zip and upload back.