Assets missing in existing project

hi, i have my old scene which build in D5 2.8, after upgrading 2.9 . i see update pop of two assets. but says not available. those assets removed from library?
image

Hi there. I apologize for the inconvenience. I have tested these assets on my end, and they seem to have been deleted. I have forwarded this concern to make sure that it is not a bug or an unwanted deletion. I will update you as soon as possible. Thank you.

Hi there, please check if these assets are accessible and visible. Thank you.

hi, those assets are now available in library. thanks.