Some Sales Funnels are virtually impossible to edit.

Normally, when you  edit a Sales Funnel, you can see all of the stages and edit whatever you want accordingly:

However, this happens when you try to edit some other Sales Funnels:

Practically everything has been deleted, meaning you have to basically re-create the funnel from scratch.

In the above example, the only difference between the two funnels is that the a between dates filter.

Whatever the cause is, it is extremely frustrating to have to create the component from scratch if all you want to make is a tiny edit.