如何强制保存一个“空的”/未更改的django管理内联?

I have some inlines in one of my admin models which have default values which likely won't need to be changed when adding a new instance with "Add another ...". Unfortunately django won't recognize these inline as new objects unless some value has changed. This forces me to add an inline, change an arbitrary value, save, change the value back and save again to reach the desired effect.I have some inlines in one of my admin models w