I believe so, but there may be some issues.... here are some thread about it.
glace freezing & blotches
http://cakecentral.com/cake-decorating-ftopict-673196-.html
I have frozen the glace icing many times. It comes out great. Just be sure when you are making the icing that you are adding the Wilton or Americolor white icing color to the mix. When I first started decorating the cookies my icing kept getting blotchy and I saw a post about the icing tint and when I started using about 5 drops per cup of icing the blotchy spots stopped. I freeze the leftovers in gladware but I also just put the decorator bags in ziploc bags and freeze them. Stir before using after it thaws. Good luck.
I refrigerate for up to 2 weeks (per another kind poster's advice previously), but have never frozen. How long can it keep in the freezer?
Thanks!
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