How to re-import 2015 return after it has been amended.

I imported my 2015 tax return successfully and got about halfway thru completing my 2016 return.  But then I discovered that we needed to file an amended 2015 return, which we have now done.  I would like to have TT re-import my 2015 return info, but I understand that this is not possible.  I do not want to start over, so my question is:  Where do I go in TT to manually correct the imported 2015 info?

Thanks