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Changes between Initial Version and Version 1 of Ticket #28173

-              initial
+              v1
 The two models are in different apps. Both apps are listed in `INSTALLED_APPS` and the calling module imports both `models` modules at top level. One of the models is "replaceable" but I'm using the original model (it's oauth2_provider.Application)
+```
+{{{#!python
 # app1/models.py
 class A(models.Model):
 …
    # This line crashes with "FieldError: Cannot resolve keyword 'b' into field. Choices are: ..."
     qs = get_A_model().objects.filter(b__myname='larry')
+```
+}}}