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How do I merge several Thunderbird Calendars?

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P Brixey
P Brixey

I have Thunderbird installed on my Windows 10 Desktop PC. When I open the Calendar tab, in the left column under "Calendars" I have four calendars showing:

  • Home,
  • Contacts,
  • My Calendar
  • one labeled with my e-mail address.

How can I get rid of three of them without losing the data? Is it possible to merge them into the "My Calendar" one? Thanks in advance.

I have Thunderbird installed on my Windows 10 Desktop PC. When I open the Calendar tab, in the left column under "Calendars" I have four calendars showing: * Home, * Contacts, * My Calendar * one labeled with my e-mail address. How can I get rid of three of them without losing the data? Is it possible to merge them into the "My Calendar" one? Thanks in advance.
Attached screenshots