We just released a new version of our appexchange app to set of customers. This new version includes FMA (Feature Management App). The issue is some org's licenses (in LMA) do not show Feature Parameter records listed under their License detail page.
Got response back from salesforce that there was a known issue which was fixed recently :Known issue which means either of Sandbox or prodcution could be impacted of this issue. To fix it goto License record of impacted org and simply make a change e.g. Expiration Date and hit save it should trigger the SF back end process to Sync FMA records between subscriber org and LMO org.