Need advice, on a B Visa without an extension. The B Visa has the name of the company that I was going to work for BUT I they have changed companies so I need to leave Thailand to apply for a new B Visa HOWEVER i have a reentry stamp on the first B Visa and worry either the embassy will not issue be a new B Visa with a still valid B Visa or the IO on arrival will notice 2 valid B Visas and comment, etc. Or have an issue when I apply for my wp and visa extension. Can I cancel the reentry stamp? If so where and how? Thank you.