I'm having a similar problem but none of the other threads seem to help.
My products have different attributes some of which are affected by price. I have added a new attribute with 40 options which will be universal to almost all the products. I can't find a way to copy this new attribute to all the products (and then delete the one or two that I don't want).
First of all I set up the new attribute in one product then copied it to another product but it copied all the attributes of the first product some of which were not applicable to the 2nd product. So I set up a dummy product with just the new attribute and copied that to the next product but all the original attributes were then deleted and I was just left with the new one.
So could anybody advise how to copy one new attribute to all the products without affecting all the other attributes?
Thanks
Just to help you with what I mean:
www.elleart.co.uk Artemis has the new 'Crystal Colour' attribute which is relevant to almost all the other products but the different designs have different options and they're not all universal. (Hope I've explained that OK)