When clicked defaults, beam hearts and beam damage reset to 0 and the check boxes below for B.H. is percent and B.D. is percent gets unchecked.
The default should be:
Beam Hearts: 100
Beam Damage: 100
And the checkboxes remained checked.
All level sword items have incorrect defaults [448]
Fixed in the next build.
Bug confirmed fixed in 461. All level swords now do have the defaults listed in post #1. Dead bug. 😊