How do I clean up measures after uncheck them from data source?

I have an old eazyBI project that I am reusing. But many fields are not necessary. Therefore I unchecked many fields in data source. But I end up getting warning message like" Calculated member formula is not validFormulas are not valid for 60 calculated members…Please fix them or delete those members." I can see these measures but cannot delete them. Is there any way for me to fix this problem other than deleting the whole source and reimport?
image
image

Hi,

The likely reason for this error is that the Jira Service Management data has become unavailable during the data import. You should check the data import options and run the full data reimport.

Please, contact support for more details if the problem persists.

Kindly,
Janis, eazyBI support