Negative CSLs: Like a Suppress or a Drain?

[OddHat]

Looking at FRed p.36, Negative combat skill levels are No Range, Constant, and Cost End. Do they work like a Suppress (i.e. they are not cumulative, and all pop back when the attacker stops paying END) or like a Drain?

Many thanks. :)

[Steve Long]

It’s like a Suppress, in that the “lost” Levels return immediately once the power ceases to effect the character.