I’m moving this to help. Please use the templates when posting FRs or Bugs.
I can’t recreate this. If I move a file, the bookmark stays there for me.
You should try going through the troubleshooting debugging steps. Reinstall Obsidian with a fresh installer downloaded from the website. Update your plugins. Test with plugins turned off. Test in the Sandbox vault. Etc.
First, search the help docs and this forum. Maybe your question has been answered! The debugging steps can help, too. Still stuck? Delete this line and proceed.