I want to have a lead alert sent to my sales team everytime a lead is updated/imported with a lead rating of Hot.  We use this to identify which tradeshow leads require immediate follow-up.  
Similarly, I don't want the sales rep to receive our generic lead alert that goes out when scoring reaches a minimum threshold.  
For the Hot Lead Alert smart campaign I have the smartlist set-up with a trigger of Data Value Changes > Lead Rating Contains Hot and the Flow is to remove from scoring alert smart campaign and to send the Hot Lead Alert email.
However, when I import a list of tradeshow leads into my email send campaign, those with a Lead Rating of Hot aren't triggering the Hot Lead Alert.   I'm kind of stumped as to why this is and any suggestions or advice would be great.
Thanks!!