Arthur's right; you need to have someone walk you through this to make sure you're making the best decision.
If your HR person can't do it, then there should be a MetLife customer service number somewhere with your policy. Call them, and have them explain your policy's features. Once you understand what you have, you can compare it to the new Genworth offering.
You may be giving up something better in your old plan than what you're getting with the new plan, and even if the price is the same - or lower - it doesn't mean it's a better value.
Very few employer-group plans meet the LTC Partnership guidelines, and that's too detailed a subject to get into here. You can find some info on Partnership at the following: http://longtermcare.gov/LTC/Main_Site/P ... rship.aspx
As to the "Restoration of Benefit," this means simply that you could use some of your LTC benefits, and then MetLife would "refill" your benefit amount if you went on claim and then later recovered. It's a good benefit to have, but not if you're giving up something else to get it, like inflation protection.
Do some homework using the insurance company resources, and you'll make the right decision. Good luck.