@Carol7031
A special offer means: Entering a special offer price in the pricefield of the "special offer" form.
(The special offer form appears after clicking on the "special offer" button).
Not clear to me what you mean by " I am making the change on the 'special offer' tab"
You can sent 1 special offer to a guest. If you have send already a specail offer and decide to change it, then first retract the existing offer before sending a new one.
I recenlty noticed when reviewing an excisting (allready sent) special offer, it does not show the offer but the normal price. This is a glitch, the offer sent is still correct.