unable to open dgn file in Intellicad 9.0

I have been sent a DGN file to work on by a client.
While the file will open/display in Bentley view, intellicad will not open the file(:
The file is a 3D model of a process plant, created in 2017.
I have tried attaching as an underlay and while the attach worked the end result was flattened.

Intellicad version : 9.0.815.0.PE+.VC15.x64.RF90
PC: I5 4590 3.30GHz
32GB Ram
Geforce GTX 960
256GB SSD ( C drive)
2TB SATA (D drive, data)

Thoughts anyone?