I am facing a problem which never encountered before. when i going to match insulation properties from one pipe to another, straight pipes taking it but the fittings like, elbows are not taking that insulation and its remaining the same.

Can any one guide why it is happening for elbows?

When placing manually one by one by double click the item and going to insulation option, then it is taking, but match properties from another fitting / pipe not working for insulation.