Why did my Burn Meter Daily Estimate Change?

I've been using CC for a month.  My daily estimate of calories burned was always 2040 (excluding any additional exercise).  For some reason, it is now saying 2030, but I haven't changed any of my settings.  Is it because I have lost 6 pounds or does it automatically readjust every month?  And although my burn meter daily estimate has changed, but daily calorie recommendation hasn't.  Just curious why this happened (because I'll take 10 calories anywhere I can get them!!)  Thanks.

Hi! It's the six pounds you've lost. The bigger we are, the more we burn. Since you've lost six pounds (yay!), you burn less and the meter reflects that.

I have been eating a constant average of 1800/day through 73 lbs of weight loss. I decided that eating less would be counter productive, so I upped my exercise.

Anyway, that's what's happened. Good luck!