In admin, Profile Fields / Fields Builder / Join Form...
If i choose the [sex] "I am a" block to have RADIO BUTTON
And choose the [LookingFor] "Seeking" block to have CHECKBOXES
It changes the Search Form (search.php) to have...
[sex] "I am a" block to have CHECKBOXES
[LookingFor] "Seeking" block to have DROP-DOWN
This is incorrect. As making a change to the [sex] and [lookingfor] blocks on Join form, should NOT change the [sex] and [lookingfor] blocks on the Search form. And vice-versa.