That's not a save. Your map in hammer is saved as a .vmf file for hammer. When you compile, you compile a .bsp thats put into the tf2 folder.
Now if the .bsp file does not get updated or created after a compile, then you have a critical compile error. It would help posting the compile log and reading the thread on this forum that says [before asking for help]: https://tf2maps.net/threads/before-asking-for-help-compile-log-checker.910/
always post the compile log if the compile fails
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