Found the commit <https://github.com/Jermolene/TiddlyWiki5/commit/2ffcbb76ebc8be9a9af932830f8a5c32cd580689#diff-dce8addfff4ad33ffd2f9200d7afe066>, that is responsible for removing the initial creator and modifier fields. It was done for switching from alpha to version 5.0.2-beta. -m
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