In the CAD file, you can check these entities properties e.g. layer, linetype, rotation, size...; in certain case if you need to classify all CAD annotation to feature data e.g. CAD to SDF, all annotation will be converted to point feature. It can be added label for each points, but the orientation for all label are zero degree. How can the CAD properties e.g. rotation be extracted and assigned to feature data? There is the video for showing how to do:

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I would like to introduce the one of new feature in Map 3D 2009. The command is called "mapfeaturesplit" & "mapfeaturemerge". It able to split/ merge feature data seamlessly and provides the tools called "split & merge rules" to handling the data attribute for those data objects.

There is two options if you do mapfeaturesplit:
1 - It supports all AutoCAD command for snapping feature object when you doing the split feature object action. You can precisely snap the object and split the object.
2 - It can be based on the existing line entity to split the object.

In the Map 3D 2009, it able to do "mapimport" and "object classification" at the same time. So it doesn't need to select entities manually for doing object classification. It provides very efficiency platform to migrate CAD to GIS.