When exporting projects from Clarity to Microsoft Project (MSP), it's not retaining ETC (Remaining Work) hours
This issue can happen due to the latest MSP Supported Update not being installed on the workstation. At a minimum, in MSP New Driver 14.4 and higher, the February 2016 Update is required, but it's best to be on the latest supported MSP Update as that contains the most fixes. If you are on the New Driver for 14.1, 14.2, or 14.3, make sure that you do not have any MSP Updates installed as this can cause issues on those versions.
Release : All Supported Releases
Component : CA PPM SAAS MICROSOFT PROJECT (MSP)
Microsoft Project MSI versions
MSP New Driver for Clarity
If you are using the MSP New Driver for CA PPM 14.4 or higher, ensure the latest supported Microsoft Project update is installed on the workstation (see: Microsoft Project monthly patches impact with Clarity). While the February 2016 Microsoft Project update is the minimum required KB when working with the MSP New Driver in 14.4 or higher, there have been multiple fixes by Microsoft Project in later updates, so it's recommended to be on the latest supported update.
If the above isn't the cause of your issue, see also: