Dimensions are placed as separate elements even though the association box is checked on under the element dimension tool.
Use the following keyin:
KEYIN: set compatible dimension off
MicroStation V7 had a compatible setting in order to drop the dimensions upon placement. MicroStation V8 no longer has this setting in the preferences, but a key-in has been added in order to do the same.-Turning OFF compatibility for dimensions seems to make them notcompatible.-SET COMPATIBLE DIMENSIONS OFF seems to work in reverse.
https://communities.bentley.com/products/microstation/w/microstation__wiki/4194/microstation-dimensions