This item has been identified as an outstanding known issue as of the November 23rd 2019 release; a workaround is provided until the issue is officially fixed.
When running a process containing a list import, these can fail with the following error:
Model (<ModelId>) does not have a valid 'open' state: current state is WAIT_FOR_ALL_TASKS_OPEN
This occurs if a user makes a change to the model (cell change, structural change, running another action, etc.), while the process is running.
Rerun the process which has failed to complete.
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