Graphs-txid.edn and metadata.edn : safe to delete?

I have upgraded to the Logseq 0.8.11 (latest), and deleted the file pages-metadata.edn as indicated in the release notes.

I see two other files : graphs-txid.edn (empty) and metadata.edn (contains only {}). Is it expected that these 2 files are (almost) empty? Are they safe to delete as well?