Here is a VERY useful site for you and/or your clients that should help clear up the maj0rity of your questions revolving around the homebuyer tax credit. This site also lists several “scenarios” that may be close to the one you’re questioning. Go here http://www.irs.gov/newsroom/article/0,,id=206294,00.html
Next up – go here for filing requirements http://www.irs.gov/newsroom/article/0,,id=204671,00.html and FAQ’s revolving around the How-To and Who-Should file.
Questions?? Send me a quick email to email@example.com or call my office at 817.329.5626 ext. 234 – I’m happy to help!