It is created by SSDT when you use refactoring in SSDT (e.g. Refactor -> Rename), if you do the deployment, and just clear the table that it will repeat to do any old refactoring that could just fail or cause a catastrophe!
If you clear the table, make sure that you also delete entries from the refactorlog.xml file in your project - the file is pretty obvious.
Make sure you are not trying to deploy the old dacpac (I think this is unlikely anyway)
Ed
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