The New December Release will be deployed to all Sandbox environments this Friday.
November Update Release will be deployed to all environments this Friday to address the issues identified in the release announcements:

Release details:

https://success.planview.com/Planview_PPM_Pro/Release_Information/New_Features_and_Release_Notes

December sandbox release -
Tasks - 1729326246 - Fixed. Spreadsheet Task Editor does not honor default task settings and values
Reports - 1901402727 - Updated. For the time series report, if the filter “Show zero values” is selected as “Do not include in report”, all the 0 valued rows are not shown

November update release -
API - 2044898805 - Fixed. Timesheet entries not get saved through WSAPI in some cases.

If there are any issues, please contact https://support.planview.com and we will promptly address your inquiry.