You can rollback files only at specific changelist by using labels in P4V.
First you need to label file revisions in a submitted changelist. Right click on a changelist and choose 'Label'. Fill in the name, make sure that the changelist is chosen and click 'Label'
In the next step you need to rollback to label. Please right click on a depot/workspace location wide enough to cover all file locations and choose 'Rollback' . In the example below I choose the whole depot. Please pick 'Label' from the 'Rollback folder to' list and type in or browse for the label you just created.
Please make sure that 'Delete files not in label' box is not
ticked, otherwise P4V will attempt to delete everything else in the path.
Please click on 'preview' to double check what actions are going to be performed and then 'Save to changelist' or 'Submit'
Please remember that this label is static and need to be deleted via 'View labels' (Ctrl+4) window when no longer necessary.