【转帖】going threw the tutors

yang686526

going threw the tutor's
i'm doing the tutorials in the sw2009 i'm at the section where you import a autocad file and convert into 3d.  i did everything it said but i cant delete any entities without deleting the whole drawing.. in autocad this was because it was a block and had to be exploded.  is that along the same lines in sw.  
"delete all the sketch entities except the upper cross-section and the line beneath it, as shown. be sure to delete the entities in the upper cross-section shown on the right"
this is the quote i'm getting but i cant just delete one entitie without deleting the whole drawing.
what am i doing wrong?
check out our whitepaper library.
are the lines blue when you try to select and delete?
if not you have somehow closed the sketch. in this state, when a single element is selected, the whole sketch is affected.

open the autocad files as dxf, then do the convert to 3d.
chris
solidworks/pdmworks 08 3.1
autocad 08; catia v5
yes the lines are blue and still cant delete one at a time; the whole drawing is being deleted.
"click view, sketch relations to clear the display of sketch relations icons in the graphics area."
what does this mean?