Can I copy an entire “draft block” from one project to another?
Hello, @Antonio_Colombini
I wouldn’t advise it. For each object, there is an internal ID number which starts at 1 and goes up very quickly, so while you may have a point called A35, it may have an ID of 368 while point A34 may have an ID of 26. It all depends on the order of what the next number will be at the time of adding the object.
If you copy a block over (using the hack method), you will need to find all of these IDs and change the numbers to ones that haven’t yet been used in the existing pattern.
Short answer - No.
That’s a very good point. It goes beyond name collision, i.e. you can’t have two points named A35. Every tool or object has a unique Id number so you can’t simply cut & paste without reordering all the id numbers. Something that could easily get out of hand trying to edit a file manually. Probably something that should have been given more thought at the beginning.
Thank you very much! Once again, extremely fast and thorough.
We try to be. 
BTW… there other issues with trying to copy a block from one pattern to another. Let us say you are trying to copy block B where it may reference tools in block A in formulas, or it may reference custom variables or measurements in the formulas that are not in the destination pattern. When a formula can’t find a referenced Id or variable / measurment - it breaks the pattern. It’s the id’s and formulas that limit us, but they are also what makes the application parametric to be able to produce ‘made to order’ patterns by simply changing to a different a measurement file or size with a multisize measurement file.