Using replace with child appears to create multiple undesired variables

Steps to Reproduce
  1. Open the editor
  2. Create a new widget blueprint
  3. Add a named slot widget to the canvas panel
  4. Right click the canvas panel > Replace with child
  5. Open the Graph tab

Result: 100+ named slot variables will be created
Expected: The canvas panel would be replaced by the named slot and no additional variables would be created.

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ComponentUE - Editor - UI Systems
Affects Versions4.18.2
Target Fix4.19
Fix Commit3853775
Main Commit3990065
Release Commit3853775
CreatedJan 15, 2018
ResolvedJan 24, 2018
UpdatedApr 27, 2018