We have identified an issue with the latest Anaplan update on Saturday, December 9, 2017, in which imports to Lists both from file and from source models are failing to successfully import Properties. This issue only occurs if the List being imported has a formula in the first Property, however, the completed import does not display the failures and therefore may go unnoticed.
Our development team is aware of the issue and is actively working on a solution. In the meantime, we are investigating workarounds for this issue that we will publish to the Anaplan community blog post below until a permanent fix is identified and released. Please visit the What's New: December 9 2017 blog on the Anaplan community for more details (https://community.anaplan.com/t5/Platform-Releases/What-s-New-9-December-2017/bc-p/26662
If you are experiencing this or any other issue, please send an email to email@example.com