ION auto load scrollers

I know i've done something wrong in my first show on my ION.  I thought scrollers automatically set to their desired color for the following cue so as to not have to set them one cue early.  I have them first appearing in cue 2 as *** amber.  Cue 2 is a 5 second fade up.  Because *** amber is only 2 frames from the first frame - clear - and follows a yellow frame the 5 second fade was able to roll it to the desired color while cue 2 was loading and I didn't see it at first.  Tonight I saw the transition from yellow to amber as the cue started coming up.  I then went out to the rig and watched the cues transition and I saw the scroller slowly rolling through the 5 second transition.

For now i fixed it by inserting the scrollers into cue 1.5 to set them.

So my question is what might i have done wrong that didn't cause them to auto set in cue 1.5?  I also noticed two other cues later in the show that only have 1 scroller at a color and they also both rolled to the color when the cue came up.  I also set them in the cue prior.

BTW they are patched as a part 2 to each of the channels who hold them.

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