I am currently in the process of re-writing some VBA macros that were written for office 2003. I was wondering if I wrote a C# add-in for 2007, if it would work for 2010 or maybe even 2013. Or if I wrote them for 2010 if they would work for 2007 and 2013 as well. I currently have access to 2007 but I could get access to 2010 if need be, no 2013 yet.
So, basically, how much does the version of office affect the plugins?