In which cases Bentley Map Topology works?

Hi. I have a file that includes a big amount of Buildings geometry. Some of the buildings are "closed shapes" and possible to see an area of it. But a big amount is not- even Autocad shows that it is a closed polyline.
Tried to use
0. Place a fence
1. Bentley Map/Topology/ Create Centroid
2. Bentley Map/Topology/Create Shapes

Does not work in some case with my file. Works with other files. Could you check and tell what is wrong?Buildings_for_forum.dgn

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