Object Repository is missing


While recording a screen, object repositories are captured which is saved.

we have added some changes to execute the recorded scripts.

While executing the same scripts, repositories are missing from backend as well as in Katalon Studio interface.

And in other case, repositories are present in backend [explorer window] but not displayed in Katalon Studio interface.

Currently, I am using Katalon version 6.2.1

Can you help me to overcome the above situation.

Thanks in advance.