When including comments to an Incident before saving it, the history doesn't reflect modifications to other fields in the incident that also were modified....

You can hit the "Details" button that's listed on the right side just above your comments. 
It resides on the "History:" bar and looks like this:

This way you can see that information, but it won't muck up your comments section.

Thank you so much for responding so promptly.  I was just discovering the Details icon as you were writing your reply, In fact, I immediately go  back online to the forum to say I think I found my own answer so I woudn't take people's time on helping me.  I'm so glad people like you take their precious time to read/reply to the forums.  Thank you again! Laura

This posting is from the old juice site -*sigh*- It'll allow you to always show the full history by default:

"To always show "More History" when editing a ticket in Altiris Helpdesk, do the following:

1. Turn off the "read-only" attribute on the file "C:\Program Files\Altiris\Helpdesk\AeXHD\templates\WorkItemEdit.ascx" and open it up in a text editor for editing.
2. In the LoadDataSources() subroutine, add the following line right before the call to BuildHistory():
3. DataStore("history_limited") = "false"

Save the file and you're done."

The credit for this goes to the original poster asbeer450