Question regarding mates

Hi,

i've created an assy file with 2 cylinder having limitdistance mates. (lets call this cylinder.sldasm) So, bascially i can move one of the cylinder up and down.

When i create a new assy file with a base(base.sldasm) and i import in the cylinder assy file(cylinder.sldasm), i find that i cant move the cylinder as what i did before.

is there anyway to correct this?

SolidworksAssemblies