**Formula or VB to get max date with multiple dates and predecessors?**

__Example: single predecessor__Step # Baseline Start Date Duration (min) Predecessor Adjusted Start Date Adjusted Stop Date Actual Start Actual Stop

1 7/17/15 23:00 0 7/17/15 23:00 7/17/15 23:00 7/17/2015 23:00 7/18/2015 12:00

2 6/26/15 12:00 30 1 7/18/15 12:00 7/18/15 12:30 6/26/15 13:00 6/26/15 14:00

3 6/26/15 12:00 2880 1 7/18/15 12:00 7/20/15 12:00 6/27/15 15:00 6/30/15 12:00

4 6/26/15 14:59 721 1 7/18/15 12:00 7/19/15 0:01

5 7/3/15 12:00 15 1 7/18/15 12:00 7/18/15 12:15

6 6/26/15 14:00 700 2 6/26/15 14:00 6/27/15 1:40

7 6/26/15 12:00 2 3 6/30/15 12:00 6/30/15 12:02

8 6/26/15 12:00 631 6 6/27/15 1:40 6/27/15 12:11

9 6/26/15 12:00 2440 7,8 6/26/15 12:00 6/28/15 4:40

E#= {=IF(ISNUMBER($D2),(IF(ISBLANK(VLOOKUP($D2,$A$2:$H $10,8,FALSE)),VLOOKUP($D2,$A$2:$H$10,6,FALSE),VLOO KUP($D2,$A$2:$H$10,8,FALSE))),$B2)}

Again, this formula works with a single predecessor, but once you enter multiples it falls back to the "Baseline Start Date."

__Example: multiple predecessors__Step # Baseline Start Date Duration (min) Predecessor Adjusted Start Date Adjusted Stop Date Actual Start Actual Stop

1 7/17/15 23:00 0 7/17/15 23:00 7/17/15 23:00 7/17/2015 23:00 7/18/2015 12:00

2 6/26/15 12:00 30 1 7/18/15 12:00 7/18/15 12:30 6/26/15 13:00 6/26/15 14:00

3 6/26/15 12:00 2880 1 7/18/15 12:00 7/20/15 12:00 6/27/15 15:00 6/30/15 12:00

4 6/26/15 14:59 721 1 7/18/15 12:00 7/19/15 0:01

5 7/3/15 12:00 15 2 6/26/15 14:00 6/26/15 14:15

6 6/26/15 14:00 700 3 6/30/15 12:00 6/30/15 23:40

7 6/26/15 12:00 2 4 1/0/00 0:00 1/0/00 0:02

8 6/26/15 12:00 631 1,2,6 7/18/15 12:00 7/18/15 22:31

9 6/26/15 12:00 2440 2,3 6/30/15 12:00 7/2/15 4:40

E#= {=IF($D22="",$B22,MAX(IF(ISNUMBER(FIND(","&$A$21:$ A$30&",",","&$D22&",")),$H$21:$H$30)))}

This formula works if I only have it pull from the "Actual Stop Date" column. If I modify it to look at the "Adjusted Stop Date" column (if Actual Stop is empty) I get a circular reference warning and it fails.

Basically, I'd like to have the "Adjusted Start Date" update based on the latest of it's predecessors "Actual Stop Date" (if exists) or "Adjusted Stop Date". Any help is appreciated and I'm not against creating a VB module, but I don't know that language.

Thanks!

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