Update. I found out that it makes a difference whether I copy from one QGIS
instance to another (if I have two qgis desktop instances running), or
whether I copy between two layers in the same instance. At least in some
cases, copying inside one instance will match field names, where as copying
between instances will instead ignore naming and use attributes order only.
I havent tested whether this is always the case (maybe it also depends on
which provider or other variables).

On Wed, Mar 26, 2025 at 4:43 AM Thomas Larsen Wessel <[email protected]>
wrote:

> Sounds likely. If I figure out the details, I will respond here. Thanks :)
>
> On Mon, Mar 24, 2025 at 1:15 AM Emma Hain <[email protected]> wrote:
>
>> HI Thomas
>>
>> In my experience, the fields will be matched from the source to the
>> destination table if the columns are the same format and name.
>> I tried to find a link to the actual fix - but couldn't within the time
>> allocated.
>>
>> Kind regards
>> Em
>>
>> Emma Hain — Product Manager/Senior GIS Analyst
>> [email protected]
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>>
>> On Fri, 21 Mar 2025 at 22:16, Thomas Larsen Wessel via QGIS-User <
>> [email protected]> wrote:
>>
>>> I found this, from 2012:
>>>
>>> "When copying features from one layer to another, attributes are copied
>>> and pasted in the same order they appeared in the original attribute table.
>>> Attribute/column names are not considered. "
>>>
>>> Source:
>>> https://gis.stackexchange.com/questions/22901/how-to-copy-features-from-a-vector-layer-to-another-vector-layer-with-only-corre
>>>
>>> I could have sworn that I have previously copied features between
>>> layers, and it matched by attribute names. However, today I just can't make
>>> it work. Maybe it depends on the "provider"?
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>>
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