The Indian government has changed the rules on how you are allowed to travel in and out of the country on a tourist visa (even on a multiple entry visa). The bottom line is that if you are on a tourist visa and you leave the country – even for a quick stop over in Nepal or Bangkok or Singapore for just a few days – you will not be allowed in back into India for 2 months. Now, you will hear stories of people who left and came back in with no problem – but you will also hear of people who could not come back in. It’s not worth the risk until the details are straightened out. Make sure you confirm what your passport will and will not allow you to do while entering and leaving India.