I think im missing something really simple here.
when i check out a part modify it and check it back in, the Assembly it is in, and the drawing associated to The part and the Assembly don't update?
Any help would be great
Yep. The assembly and the drawing have to Open to update.
Here's the method I use if I have a part in an assembly and a drawing that I want to edit. I open and take ownership of all the top level files that reference this part. Edit the part, rebuild and save all the top level files, then check them in.
When the top level files are open, so are all the children, see Open In SolidWorks in the Taskpane. They may not display in the graphic window, but they are open
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