Chris, this a little tougher, as you didn't put your foot down. You were not promoted, you accepted a lateral transfer. When you didn't stand up for any of your demands before accepting the transfer you set a past practice scenario. Now it appears you want to re-negotiate, you want a do over. When you didn't stand up for yourself, why would the company re-negotiate, they have more work being done by less people? At some point you may need to draw a line in the sand, and say enough is enough. I would document the additional responsibilities you have experienced, and try to appeal to their kinder side, but be prepared if they say no. By nature, people are happy to please, and many times they don't ask enough questions, or get commitments, or verify each parties understanding. If you had said "I am not going anywhere until we discuss what I have asked for", the ball would have been in your employer's court, as they wanted the transfer to happen. By transferring first you removed your leverage. Good Luck...