Translations:FAQ/3/en
From ZDN User Guide
A core concept of ZDN is that these are institutional records. If your hippo used to eat apples, and now you don't feed anyone apples anymore, you still used to feed apples. It's part of your record for that animal. For the same reason, you can only inactivate animal diets, not delete them. Someone may need or want to know that you used to feed apples to your hippos. You may get a new hippo in the future and want to copy an older diet for it.
