Can i change job on H1 after maxout without lavor approved

I am on H1b for 8 years.

Got extension beyond maxout based on Perm file 4 years back (but not approved)

Can i switch job in 8th year where my current visa is calid till august 2017. Got extenaion based on AC21 (pending Perm appeal)

Newemployer will file new perm once i move onto their payroll.

Could there be any issues for my H1 transfer?