I'm the lead mod for Gang Beasts. I have old archived categories for old game versions. For newer versions, I've switched to using a variable to separate old runs since I think it works better and keeps everything visible and accessible. Now that I am unarchiving old categories to start the process of moving everything over, none of the runs in the archived categories are visible

(categories marked Legacy are the categories that I just unarchived)

Those runs are orphaned because they don't have a value for the Version subcategory. Subcategories are a filter so you can't see runs where they don't have a value set.

To fix this issue, press the "Apply default to runs" button on the subcategory page. This will set all runs without a value to the default value.

Or turn the subcategory into an annotation instead, so it doesn't act as a filter and then you can move runs into the correct value manually.

To clarify, "Apply Default to Runs" only applies to runs that dont already have a subcategory/variable? It wont affect runs with one already set?

Yeah, "This will apply the default value to all orphaned runs (runs missing values for required variables) subject to this variable"