Sir John,
Thanks for the question. You know that I was never into the combining so much until recently. The point is that the suggestions the program makes are predictions, meaning they are expected near-future results. They can happen immediately or a bit later. Dr. ZID for example always combines Midday or Evening in California, but plays the the ZID system numbers (as well as Wild Wheel numbers) for a period of 5 or more drawings without changing the numbers.
Let me show you somehting...
Here is a complete Wild Wheel Prediction from January 28 (combined Midday/Evening), the winning numbers in that suggestion list are kind of fascinating::
Wild Wheel 3
PICK 3 Box/Straight Master System
Draw entries: 6
751 950 591 420 602 339
Filter Settings
High/Low: HHH HHL HLL LLL
Odd/Even: OOO OOE OEE EEE
Num.Type: Singles
Playing Suggestions: 67
847(Straight Feb 4, Midday) 867 871 648 387(Boxed Jan 31, Evening) 647 841 861 872 587
741 761 348 368 842 862(Boxed Feb 2, Midday) 347 367 381 548
568 641 742 762 812 870 371 547 567 581
712 382 642 840 860(Straight Jan 29, Midday) 341 361 372 412 582
612 740 760 810 541(Boxed Feb 1, Evening) 561 572 710 342 362
380 640 312 370(Boxed Jan 29, Evening) 410 542 562 580 610 512
570 340 360 310(Straight Feb 1, Midday) 540 560 510
So 3 Straight, 4 Boxed for the following week. Of course nobody plays the entire list, but I think what can be seen, is a trend at least, a trend towards the numbers that will be coming out as results in the future.
So to answer the question: I think you can leave the numbers up for the entire day. If you have the time and opportunity to adjust the numbers for the evening drawing, do so. I personally would leave them for the day, at least for the day.
Good Luck