Looks like they do. These are the two ModuleGrappleNodes in the sfs.
MODULE
{
name = ModuleGrappleNode
isEnabled = True
stagingEnabled = True
state = Grappled
dockUId = 3684687629
grapplePos = -0.456129104,0.42180261,-0.397637904
grappleOrt = 0.77568686,-0.468438506,0.422936171
grappleOrt2 = -0.508752942,-0.860675693,-0.0201938152
MODULE
{
name = ModuleGrappleNode
isEnabled = True
stagingEnabled = True
state = Grappled (same vessel)
dockUId = 3684687629
grapplePos = 1.49011527E-07,0.50418061,4.47034608E-07
grappleOrt = -1.49011612E-08,1.00000012,-8.94069672E-08
grappleOrt2 = 0,8.94069672E-08,-1.00000024