Clear Discrete Mark Time?

I just set a cue where a group comes up with discreet time. Since it comes up from zero, the channels are also marking.

The mark cue that sets its NPs now also has discreet timing, and I can't seem to clear it. The discreet times are in part 1, while the actual marking happens in part 20, and neither [Group 601 time enter] nor [Group 601 time @ Enter] clears it.

Is this a syntax issue or a bug? Ion Classic, Version 3.2.9 Build 16

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