Skeletal Merging Nodes Corruption

This is fairly uncommon issue, but sometimes it happens when using Skeletal Merging plugin. Even if you have the plugin enabled, nodes in the blueprint can randomly get corrupted like on the screenshot below. Refreshing and reconnecting them helps for a session, but after project reload it will get corrupted again.

To fix it, you going to have to change the order of your project module loading from "Default" to "PostDefault". You can do it by going into your .uproject file and changing it like this:

Once you do that, the issue should be gone.