When I copy a portion of the mindmap and paste it into any other application, the ordering is wrong.
For example if I copy this:

When I paste it looks like this:
When I copy/paste the branches, they are listed in this order:
Branch 1 - Item 1
Branch 1
Branch 1 - Item 2
Branch 1 - Item 3
Branch 2 - Item 1
Example map
Branch 2
Branch 2 - Item 2
Branch 2 - Item 3
Branch 3 - Item 1
Branch 3
Branch 2 - Item 2
Branch 2 - Item 3
They should be ordered like this:
Example map
Branch 1
Branch 1 - Item 1
Branch 1 - Item 2
Branch 1 - Item 3
Branch 2
Branch 2 - Item 1
Branch 2 - Item 2
Branch 2 - Item 3
Branch 3
Branch 3 - Item 1
Branch 2 - Item 2
Branch 2 - Item 3
I originally reported this as a bug but it’s apparently a feature that needs to be requested...