Estimate and Time spent attributes in JRS

I am using JRS on CLM V6.0.2 with MSSQL DB.I cannot find Estimate and Time Spent attributes in Work Item artifact in JRS. Is it a known issue? There are attributes of Actual work and Planned Work but they don't seem to fetch the required values. For me these two should be available in JRS as they are part of the system and available in RTC query and as workitem attributes. Any workaround/suggestion in this regard will be helpful.

Thanks!