Gary, here is a well set up situation to test. Although anyone else with the time to test, the more results the better.
The 1863 scenario with Hooker vs Lee. Go to Hookers army in Stafford, VA just southeast of Manassas. Activate synched move for Hooker and all his active corps. Plot an attack on Lee's army at Fredericksburg.
Note the days required to reach Lees army by each of the corps participating in the attack.
Now go to Grant's army west of Vicksburg at Richmond, La. Activate synched move for Grant and all his active corps. Plot an attack across the river against Pemberton's army at Vicksburg.
Note the days required to reach Pemberton's army by each of Grant's corps participating in the attack. Now hit the proceed to next turn button.
Are all corps arriving at each battle on the same day? Or are they attacking piecemeal? If they are attacking separately, each separate corps will be attacking at poor odds and will either retreat before battle or be badly defeated. The battle screen will indicate how many corps are participating in the battle. If sync move is working, all Union corps should attack simultaneously in each battle.
Also there is one engineer unit in both Hookers and Grant's HQ formations. If the HQ formation is attacking by itself, remove the engineer units and try again. Engineers, sailors, marines allow formations to move faster.
Also check casaulties for both sides if the battle is a multi-day battle. Check to see if all losses are suffered by only a single formation.
Run through this situation three or four times to see if all results are relatively consistent or if any extreme, anomalous results occur in terms of arrival times or formation casualties.
Synched move and defending/attacking with only a single formation are the two primary problems I have seen with 1.08d.
Although with the sync move problem, Pocus has stated to ignore the differing arrival days as they will still arrive on the same day regardless of the displayed marching times. So maybe not a problem but still should be tested because the working 1.08 displayed simultaneous arrival days.
Also I recently had three corps defending Manassas when attacked by a large Union army. Only Jackson's corps fought in three separate battles over a single turn and was completely wiped out. Jackson received no help from the other two CSA corps within his region. In earlier versions of the game, that was a common bug but was fixed. That bug may be back. Although there is a possibility that Jackson's loss without help from the other two corps was a freak situation but it is still so similiar to the earlier bug that it deserves attention.
Let me know what results you find with 1.09. If you have any questions, let me know as well.
Thanks!