I have just wiped my PC and had Windows 7 installed.

Of course I have a copy of all my data files.
On my old system (Win-Vista) I had FTM2006 installed.
Last year I also installed FTM2010
I continued to refer sometimes to FTM2006, as in FTM2010 I sometimes could not find what I wanted.

I wanted to set the same thing up on my Windows 7 setup, but when I copied my data files, I forgot to note which file was being used by which version of FTM.
So my Question is:Can a file saved by Family Tree Maker 2010, be fully read by FTM2006?

Any advice on my question, from a guru, would be welcome.
Thanks in advance
Martin