Map Check message log gets spammed with External Reference warnings when a project is converted to 4.9 from a previous engine version. These warnings don't seem to actually do anything to projects or performance but they are spamming the logs.

Steps to Reproduce

1. Create a project in 4.8 (third person blueprint)
2. Open 4.9 Editor
3. Convert project from 4.8 to 4.9
4. Open Window>Developer Tools>Message Log> Map Check


Numerous warnings of externally referenced content.


No external reference errors.

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ComponentUE - Foundation - Core - Cooker
Affects Versions4.9
Target Fix4.12
Fix Commit2899419
Main Commit2936662
CreatedSep 1, 2015
ResolvedMar 30, 2016
UpdatedSep 29, 2017