Custom sites not visible on SCA

Hi Team,
Im not getting 2 of our custom sites as checklist in SCA tool.
Some times they are appearing in SCA checklist and not getting rows.
and sometimes only limited number of rows like 16 or 20.
From console side everything is fine., performed HC. Unsubscribed and re-sunscribed as part of troubleshooting, No luck. We are different scenarios for every import.

Are those sites created as an SCM checklist? SCM fixlets are a bit different than regular fixlets and they need additional MIME fields to appear on SCA.
Is that something you have already taken care of and not working?