work from canada on h1b

#1
I am currently on TN status working almost 90% from home in Canada. My company wants me to apply for H1B this year. Can I work from home in Canada on H1B?

I had a H1B before in 2005. The last time I was on H1B was in August 2009. Can my company apply my H1B as cap exempt (As my H1B status was more than 6 years)?
 
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