When I try to replace my previous ghost planning, I choose to force paste (ctrl+shift+left click) my blueprint on it.
Then crash just happens.
Here are the conclusion I get from a few tests.
I find super force build
1.Approved ghost on Unapproved ghost-> crash
2.Approved ghost on Approved ghost ->work
3.Unapproved ghost on Approved ghost ->work
4.Unapproved ghost on Unapproved ghost -> crash
It's when unapproved ghost is force replaced by the other then crash happens
Every test is in a new game without any other mods enabled
Here is an example to across my blueprint orthogonally like this
->https://imgur.com/a/qGvqaMk
then
->https://imgur.com/a/hRuXqfH