What would be the reason if I got assigned a different prosecuting attorney?

What would be the reason if I got assigned a different prosecuting attorney?
I have a pending felony and it’s been going on for a year now had trial pushed back 3 times and just recently learned from case net I was assigned a different prosecuting attorney. What could the reason be and why wouldn’t my public pretender I mean defender mentioned it. Thanks for reading my question, have a good day.

Justin’s Answer
There is no need to insult your attorney. If you are already represented by counsel, you should ask them. There are plenty of reasons you have a new prosecutor, the most likely being the original prosecutor was assigned to a different department or the original prosecutor just got around to putting a subordinate on the case.