Error during BigPicture sync

[StayAtHome]

We have this error every time we sync BigPicture (after changing the order of issues (stories) on Gantt):

Partial synchronization with bigpicture in Core Development.
Updated tasks: CR-38 CR-39 CR-40 CR-41
CR-39 task synchronization
Details: The task type cannot be changed because the task cannot be edited

Why is BigPicture trying to change the task type?

[Radosław (SoftwarePlant)]

Hi, 

I can see you already have a live ticket with our Service Desk and we are waiting for more information to be able to analyze the cause of your problems.

In such cases where finding the cause of the problem requires more detailed analysis, it is best to contact our support team via support@softwareplant.com

Radosław SoftwarePlant

[StayAtHome]

Ok, the problem disapeared after Jira had been reindexed. :-)