In presetup-settings state the user is able to crop the volume of interest for the cposition reference to desired size.The user needs to press save in order for the new cropped cposition reference to become active.If save is not pressed there will be no change to the cposition reference.When save is pressed a user dialogue is presented "the edited reference will become the active reference.Do you want to continue yes/no?" upon confirming with a yes, the reference is saved.If a new field is selected at the linac, c4d will automatically enter the presetup state and show the presetup screen.The potential issue is if a new field for the same patient is selected when the user was editing a reference and pressed save but did not acknowledge the confirmation dialogue.If the user then confirms the save reference operation after the new field was selected, c4d will assign the reference to the site which the new fields belongs to if the patient is the same.This is an issue if the new field belongs to another site than the first one.
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