2 different Pipes in the Model are being extracted as 1 item in Isometrics

Hi,

We are having issues extracting a model where we have a galv cs pipe and black cs pipe in the same specs connected via slip-on flange. When extracted, it's either those pipe will be in the MTO as 1 item as galv pipe or black pipe. When you extract them separately, the description is correct but we need it in 1 single isometric drawings. Anyone has a solution to this?

2 different pipes:

  

Output iso where 2 pipes are tagged as item 1.