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Changes between Initial Version and Version 1 of Ticket #36108, comment 1

initial	v1
9	9	In other words Django doesn't keep track of model instance fields that were assigned a different value since their last retrieval / persistence to the database and will [https://docs.djangoproject.com/en/5.1/ref/models/instances/#specifying-which-fields-to-save default to saving all fields] if `update_fields` is not specified which is denoted by `update_fields=None` in signal receivers.
10	10
11		If you want to keep track of which field changed ~~and [https://django-model-utils.readthedocs.io/en/latest/utilities.html#field-tracker you should use a third party application for that~~].
	11	If you want to keep track of which field changed you should write your own tracker of old-field values and flush it on `save()` or [https://django-model-utils.readthedocs.io/en/latest/utilities.html#field-tracker use a third party application that does it for you].