How Are Library Duplicates Determined?

[Anonymous]

I copied one library part, then modified the 2D code so about 25% of it is now different. When I reloaded the library, the Library Manager tells that my new part is a duplicate of my old part. I have this same problem on a couple of other GDLs.

What do I have to do to the new part to get AC to understand that it's not a duplicate?

[Djordje]

Jay wrote:
IWhat do I have to do to the new part to get AC to understand that it's not a duplicate?

Did you change the name?

Clear the library cache; that should help.

[Anonymous]

Djordje wrote:
Did you change the name?

I always prefix our objects with our company's initials.

The cache may have been the problem -- I didn't have any duplicates when I ran AC this morning.

[Greg Kmethy]

Duplicates are determined by their UNID - if the main ID (the first part of the ID) is the same, the library parts are duplicate. If the main IDs are different, then the objects are different (regardless of names).

There is an article covering this story:
http://www.graphisoft.com/support/archicad/archiguide/guid.html

HTH,
Greg