All placeables are gone

Just as i was about to test the map the next day, i load into my map to witness that suddenly all my custom placed objects (like sanbags etc) are completely gone, every single object across the map that i placed individually EXCEPT some effects like flames etc.

since i doubt any other player encountered this as of yet, i hope for a mod or dev response, thanks.

I hope i am missing something otherwise good luck with the editor.