I'm using the MicroHD receiver, and an A3 receiver with a 1.2m dish dedicated to Ses3, and I see NO real differences with the signal since they switched to this satellite. I did change my lnb skew to normal, from the abnormal skew the old sat had.
I don't see how changing the name of the sat would cause you to lose signal, that just doesn't make sense.
You might want to try to get Brian (Titanium) attention focused on this thread, and I'm sure he'll have a method to narrow down what's really going on, and probably a cure.
My suggestion would be to REBOOT, then create a totally NEW satellite position for this, and do a detailed blindscan, followed by a regular blindscan to see what happens.
MicroHD slaved with a 4Dtv? Using a splitter? Maybe there's a signal notch-out (I've seen this myself) going on here making you lose certain frequencies? Have you tightened up the connections, or tried swapping out the coax jumpers?