Issue in retrieving Delta link in MAIF OData response in application/json format only

[Yugesh]

I exposed some database tables as entities using Mobile Application Integration Framework(MAIF). Here, server-side paging is enabled, and delta sync is on in MAIF. When I try to retrieve the data using application/XML format, server is sending the data along with delta token but When I change accept format to application/json, server is not sending delta link.

When retrieving data in XML format

When retrieving the data in JSON format

Is something needs to be done in MAIF side? it seems weird that it work in XML but not in JSON.