Baking Pareve to Eat with Meat - in a Dairy Oven

Hello, I wanted to ask if I put potatoes in a dairy oven that I intend to eat with meat, and the oven has not yet heated up, should I remove the potatoes from the dairy oven and bake them in the meat oven? The question is whether nat bar nat is permitted post facto after I put it in the oven or after it has heated up? And if I did not remove it, can I mix the potatoes with the meat and eat them together, or is it still preferable not to mix initially, and only if they are already mixed is it permitted to eat? I would appreciate clear sources. Thank you very much.

Hello 

According to the instructions of the Gaon, Rabbi Avraham Fried, shlita, it is permitted to bake pareve food in an oven absorbed with one type, in order to eat it with the other type. 

See Shulchan Aruch, Yoreh De'ah, Siman 95, regarding the dispute between the Shulchan Aruch and the Rema on cooking in a vessel of one type to eat with another type. There is a distinction whether the vessel is new or not.

However, see Shulchan Aruch, there, Siman 108, Paragraph 1, that in an oven there are cases where there is no prohibition and absorption, as it is called 'smell' and not 'steam', and according to Halacha, smell is not considered. See Avodah Zarah 66b. 

And the opinion of our teacher, the Gaon, Rabbi Avraham Fried, shlita, is that in our ovens there is only smell. 

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