Everyone in this topic,
Before I sent my application in Jan 2014, I asked CIC agent if I may send additional documents and he said NO CLEARLY.
So I skipped the idea of putting all residency proof related documents but however I provided 1 additional document for following reasons.
The day I came to Canada for the first time to apply for my PR Card, the same day I returned to USA.
After 2 months when I finally moved permanently to Canada and entered through canada border because I had my PR card, I did not get stamp on my passport so I did not have any proof on Passport that I came back on that day.
However I have this Goods to follow list with CBSA stamp with entry date so I include this document and submit a note about this explaining the situation.
So, if there is something specific where you feel that CIC will suspicious about in and out or anything else, you can just put additional document to proof that.
Just would like to share my process to get you an idea.
Thanks
canadp