AutoCAD Forum

[#1]

I had a floor plan that had multiple Z points in it that caused problems when I tried to draw splines from one to other objects that weren't coplanar. I used the flatten command to flatten the complete drawing. That solved my problem with the spline polylines but the drawing has about 50 blocks that are symbols for electrical outlets. When the drawing was flattened it created a new block definition for every instance of that electrical symbol block and added "-flat-1 thru -flat-39" to them. It did the same to other blocks that had multiple instances as well. Is there any way that I can change them back to their original block names without deleting and replacing all of them?

[#2]

That's a known problem with FLATTEN in some files: there is no fix to date.
You will need to replace each block individually: Express Tools has that command, and there are dozen free lisps that do it too.

[#3]

To replace multiple blocks with same prefix, you can try attached MBLOCKREPLACE.vlx with wildcard block name search option.

To avoid create multiple blocks when flattening a drawing, you can try attached CHZ20.vlx.

CHZ20.zip ‏48 KB

MBLOCKREPLACE.zip ‏19 KB