When we are exporting the drawing files of solidworks to convert it to dwg files, the dangling annotations like centerlines and centremarks which are hidden in SolidWorks are also exported ed to DWG and is visible in DWG.

Can anyone guide me out how to erase this dangling items in AutoCAD file?

Even we map the layers which doesn't help.

Here are the images of SolidWorks files and the dwg extract and you can mark the difference.