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Task-Management for multiple gmail-task-calendars

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When moving a task from "meine Aufgaben" (my tasks) to another Gmail calendar tasklist ("AI"), a ghost entry, which cannot be completed or deleted, remains in the old Thunderbird tasklist "meine Aufgaben". Thus I have many tasks twice in different Thunderbird-calendars, but only once in Gmail.

When moving a task from "meine Aufgaben" (my tasks) to another Gmail calendar tasklist ("AI"), a ghost entry, which cannot be completed or deleted, remains in the old Thunderbird tasklist "meine Aufgaben". Thus I have many tasks twice in different Thunderbird-calendars, but only once in Gmail.
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I am guessing you use an addon for tasks as Thunderbird does not natively support the Google tasks interface. Is is perhaps the provider for google calendar?

If it is you will find a support site and a support email on that addons download page https://addons.thunderbird.net/en-US/thunderbird/addon/provider-for-google-calendar/

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Chosen Solution

I am guessing you use an addon for tasks as Thunderbird does not natively support the Google tasks interface. Is is perhaps the provider for google calendar?

If it is you will find a support site and a support email on that addons download page https://addons.thunderbird.net/en-US/thunderbird/addon/provider-for-google-calendar/

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I use the Gmail-Addon. Thx for your support!

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