Why do I get the "changes" option in a Trigger rather than the "changes to" option?

I have set up workflows based on changes in a Dropdown (Multiple selection) cell. Some of them, allow me to set the trigger for when a value changes TO something different. But with others, it just gives me option of triggering the workflow when a value is changed. Why is this different? Some give the option of triggering when the drop down changes to a specific value and others just when the cell changes (and I cannot specify when it changed to what.)

I'm attaching screen shots, thank you!

This is what I want to do:

This is what I get in some cases:

Can anyone please help me with this? THANKS!