I found that if you do
time >> C:\results.txt
you get the time in detail, with a prompt for the new time
The current time is: 7:07:47.65
Enter the new time:
At a command prompt you can then either enter a time or hit "Enter" which leaves the time unchanged and you move on. But this is a batch file ...
The trick I found is to do
echo.|time >> C:\results.txt
which evidently pipes an "Enter" to the time command, which then lets you move on INSIDE the batch file, and also gives the detailed time in the results file. It has the extra text, but hey, I can at least read the detailed time of the command which is all I really care about