I feel we keep dancing around this issue. The problem arises whenever you are working in a mixed field of solids and wireframe entities. When you want to move or trim or manipulate wireframe entities, as soon as you select them, the solid edges become dominate. You can turn of the edge selection in the selection box and everything is good until you exit the function that you were working in. Then when you try to manipulate something else, there's that solid edge default again. There seems to be no way to turn this off as a default. The guys in my shop Hate this. Absolutely ANNOYING! Way too much time spent turning this off. Did I mention ANNOYING? If there is a way to deal with this please tell. Not looking for a work around. We've been dealing with this for a long time. I keep hoping the next version has the fix. I'm on 2023, getting ready to install 2024. not getting my hopes up, but, Maybe!

Look for .STL's to be more friendly In the MC2019 version. You can now pull curves from an STL.

Stock Models are very powerful tools when they are used in the correct way. They aren't just for verification purposes. If you start with a stock definition, either through the standard stock def, or through importation of a model, you can use that to trim your nci's through the stock tab on most high speed tool paths. you can also use it to import a casting model, then use that as a sock driver. Open the Stock Model tab in toolpaths. in the Stock Definition page you'll see several different ways to define your stock model. Hit the "?" mark on the bottom right hand side of your screen to learn more about this awesome feature.