Has anyone tested or knows whether it makes a difference to upload a disavow file to both www. and non-www. versions of your site in GWMT?

[CustardOnlineMarketing]

Although Google treats both as separate sites, I always assumed that uploading the disavow file to the canonical version of your site would solve the problem. Is this the case, or has anyone seen better results uploading to both versions?

[Ryan-Bradley]

It's always been my understanding that you default to the canonical version. Now if you change your canonical version, you would have to update your disavow file urls to the new canonical version.

[Chris661]

Do you see links reported in GWMT for both versions? In our case there are no links reported for the non-www site. (www is canonical). If you see links on both sites, I would disavow both just to be safe.