I may be overlooking something, and I am really hoping that is the case. I am attempting to build out some functionality that is centered around bulk updating of offers. In order to do this, you need to maintain continuity from the existing offer, and the newly updated offer. For some items, this is incredibly straightforward because both the returned inventory response and offer response includes all the initial data. You can simply grab it all and stick it in the updated payload and publish the offer.
Unfortunately, I am running into quite a bit of items (category driven?) that will not return the condition, nor the category ID through EITHER responses. This is incredibly frustrating and makes updating on a large scale impossible. I mirror all my listings in a database, so I do have the conditional ratings but I definitely did not save the actual category id (i have the taxonomical structure in my DB, but I need the ID). Again, I am really hoping I am missing something, hence why I am posting.
