You have to make sure they're into the same layer as the others. Most people use layer 0 or layer 1, you have to check and add that to the lifebars that don't have it.
The problem is that the copied data lifebars for "arcade" mode. Apparently there is another layer.
[Simul Lifebar]
;Player 1
p1.pos = 98,33
p1.bg0.spr = 10,0
p1.bg1.spr = 11,0
p1.mid.spr = 12,0
p1.front.spr = 13,0
p1.range.x = -81,81
p1.bg0.layerno = 1
p1.bg1.layerno = 1
p1.mid.layerno = 1
p1.front.layerno = 1
;Player 2
p2.pos = 295,33
p2.bg0.spr = 10,0
p2.bg0.facing = -1
p2.bg1.spr = 11,0
p2.bg1.facing = -1
p2.mid.spr = 12,0
p2.mid.facing = -1
p2.front.spr = 13,0
p2.front.facing = -1
p2.range.x = 81,-81
p2.bg0.layerno = 1
p2.bg1.layerno = 1
p2.mid.layerno = 1
p2.front.layerno = 1
;Player 3
p3.pos = 98,13
p3.bg0.spr = 10,0
p3.bg1.spr = 11,0
p3.mid.spr = 12,0
p3.front.spr = 13,0
p3.range.x = -81,81
p3.bg0.layerno = 1
p3.bg1.layerno = 1
p3.mid.layerno = 1
p3.front.layerno = 1
;Player 4
p4.pos = 295,13
p4.bg0.spr = 10,0
p4.bg0.facing = -1
p4.bg1.spr = 11,0
p4.bg1.facing = -1
p4.mid.spr = 12,0
p4.mid.facing = -1
p4.front.spr = 13,0
p4.front.facing = -1
p4.range.x = 81,-81
p3.bg0.layerno = 1
p3.bg1.layerno = 1
p3.mid.layerno = 1
p3.front.layerno = 1