Keyboard shortcut for "Previous Conversion" in Camera Raw

[#1]

In Camera Raw is next to "Basic" a pulldown where you can select "Previous Conversion".

Can somebody tell me what the keyboard shortcut is for this action. It is not on the list of all the keyboard shortcuts ans I've tried almost every combination possible.

Thank You

[#2]

In Camera Raw is next to "Basic" a pulldown where you can select "Previous Conversion".

Can somebody tell me what the keyboard shortcut is for this action. It is not on the list of all the keyboard shortcuts ans I've tried almost every combination possible.

Thank You

[#3]

There you can find all shortcuts for Camera Raw Default keyboard shortcuts in Adobe Camera Raw

[#4]

AFAIK, There isn't a shortcut. If there was one, it seems that it would be listed on the same line as the command.