Professional Data - Diversity, Job, Grants specific professional data

Hi Team,

I understand that there are delivered app messages to get HCM data into Grants. However, I am working in an environment where we do not have HCM system integrated with PS FSCM. So, in orecr to populate Grants professional data, I am trying to get the HCM data from Job, diversity, accomplishments, employment etc. from legacy system through a custom interface and run the employee load process on FSCM end. However, it is not populating the Grants GM_PERS_DATA table and I cannot see the Grants specific details. AM I missing something? How does the GM_PERS_DATA table get updated? Which process/app