When trying to Copy and Paste an AutoCAD Block version 13 (cell) from a DWG file using the commands CTRL+C and CTRL+V or Edit > Copy and Edit > Paste,
the Block will not paste into the DGN MicroStation V8i. With two sessions open;
In the DWG, the Block is selected, then copied (Edit > Copy) Moving the mouse into the DGN file, select Edit > Paste The Block can be seen on the end of the mouse cursor When clicking to accept the Paste command, the Block disappears and does not paste into the DGN
For what it is worth:I am working with a lot of dwgs and found that the copy-and-paste of blocks is not working well in microStation. "simple" blocks (pure graphics) seem to work OK.
Yet blocks with properties(labels) like titleblocks, are impossible to copy in mS. In AC you simply select the block, go Crtl-C, go into the second file(e.g. layout) and paste with the labels intact. In microstation you just loose it all.
In AC this is just working fine. So while I am (still) using microStation most of the time (because I am used to it) I am lucky to have AC for this kind of operation.
I guess there are quite a number of functionalities that would need to be overhauled.