Moto G 2nd Generation - Mobile Data is not working after the upgrade to 5.0.2 MOTO G 2nd gen, Mobile data not working (India) post Android Upgrade to 5.0.2 from 4.4.4...any clue..

could be linked to improper upgrade and is there a way to restore ??
Weirdly I inserted another sim into the 2nd slot(it has no service btw), and voila The excalamtion(!) mark is gone from the mobile network icon and Mobile data is back up. I just hope XDA doo take a look at this... And yes I had tried soft reset , factory reset, re inserting the sim and re registering , APN manual config etc etc..