Pasting creates new timestamps.  So copy/paste works fine, there’s just no way 
to do a unified copy/paste between eeschema *and* pcbnew.

The timestamps are moving to UUIDs as we speak.

The links are reset/updated when you do an Update PCB from Schematic and chose 
the “re-associate by reference” option.  (The timestamps/UUIDs encode said 
“association”.)

Cheers,
Jeff.


> On 15 Feb 2020, at 23:40, Brian Piccioni <br...@documenteddesigns.com> wrote:
> 
> I guess I'd wonder then why provide Copy and Paste/Duplicate if the result is 
> not usable?
> 
> It seems like a sort of honey pot.
> 
> On 2020-02-15 6:34 p.m., Eeli Kaikkonen wrote:
>> 
>> 
>> 
>> On Sun, Feb 16, 2020 at 1:20 AM Brian Piccioni <br...@documenteddesigns.com 
>> <mailto:br...@documenteddesigns.com>> wrote:
>> I think optionally removing the path might be a good idea - or, simply 
>> removing it from duplicated/pasted footprints. Of course I am probably 
>> missing something.
>> 
>> Brian
>> 
>> You can't backannotate something which doesn't have the "path". But those 
>> footprints can of course be re-annotated.
>> 
>> I don't think it's possible to cleanly copypaste groups of footprints to 
>> create "duplicated design elements" as you say. Either they point to one 
>> group of symbols while they should point to hierarchical sheet instances 
>> (each of which have different path), or they don't have corresponding 
>> symbols at all.
>> 
>> If you have two footprints with identical "paths" you can reannotate from 
>> eeshcema (with a warning IIRC) and both footprints will have the same 
>> refdes. But it doesn't make sense to have two footprints with different 
>> refdes to point to one symbol because the symbol has only one refdes.
>> 
>> Having identical paths in more than one footprints is problematic anyways. I 
>> have used it but I don't recommend it.
>> 
>> Eeli Kaikkonen
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