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Engineers upload these to forums when they encounter errors like "Feature Failed to Regenerate" or "Sketch won't Extrude".
The first version is saved as filename.prt.1 , the second as filename.prt.2 , and so on. Prt1zip
In Creo Parametric, every time you save a part, the software creates a new version of the file rather than overwriting the old one. Engineers upload these to forums when they encounter
This system allows engineers to "roll back" to previous iterations if a new design change fails or corrupts the model. 2. Why Zip Them? the second as filename.prt.2