QuerySelectField gets ignored by form.process(obj='some_object') or MyForm=MyForm(obj='some_object')

[AdditionAddict]

Is there a nicer way to pre-populate a form that includes a QuerySelectField than either giving up and using a selectfield or having to manually assign every field as the following people were forced to?

Following person gave up on queryselectfield:
https://stackoverflow.com/questions/50564319/flask-queryselectfield-edit-form/50577713#comment96939968_50577713

Following person was forced to manually assign each field value:
https://stackoverflow.com/questions/36851172/flask-wtforms-queryselectfield-render-queryselectfield-with-a-choice-selected

QuerySelectField gets ignored by the following:

form = MyForm()
form.process(obj='some_object')

or

MyForm=MyForm(obj='some_object')

The only way round is to manually assign each field value

MyForm=MyForm(some_query_select_field='some_object', every_other_field='value', ...)

wich defeats the niceness of what QuerySelectField gives you.