No. Genesys Cloud currently only supports unidirectional syncing from identity management systems to Genesys Cloud. Any changes made in Genesys Cloud will not be synced to the identity management systems and may be overwritten during the next sync from identity management systems to Genesys Cloud. Whether attributes changed in Genesys Cloud are overwritten during a sync depends on if the attributes are mapped in the identity management systems.

For example, let’s assume that you map the department attribute in your identity management system to an attribute in Genesys Cloud but you do not map the mobile number attribute. 

• You update the department in your identity management system. This change causes your identity management system to sync user data to Genesys Cloud. If you previously changed other user data in Genesys Cloud that is mapped in your identity management system, then the sync overwrites those changes in Genesys Cloud.
• You update the mobile number in your identity management system. This change does not cause your identity management system to overwrite the mobile number in Genesys Cloud. 

For information about Genesys Cloud SCIM (Identity Management), see About Genesys Cloud SCIM (Identity Management) and Genesys Cloud SCIM (Identity Management) overview (Genesys Cloud Developer Center).