We have a couple drawings that have huge bloat to them. File sizes in the 300 meg range. We have been working with GTAC and they mentioned there are 4million lines in this drawing. We have found a program on GTAC to delete these lines, which takes about 6 hours per drawing. This happened around NX version 7.5.5.4
For what it is worth these where originally I-Deas drawings that went through the Content Migration process. But, the NX drawing after it was migrated was still 29 meg. So this drawing was ok. It was not until we did a save to a new revision is when all of these zero length lines somehow got into the drawing.
We did more inquiry and we found these lines are on layer 257.
What is layer 257 used for? Is it to catch all the random stuff from a drawing? Is it a trash collection layer?
What kind of impact does it have deleting these lines off of layer 257.