No MBA's will not be eligible for the extensions...read below..
1) The eligible CIP codes for the extensions include...
Engineering Technologies: NCES CIP Codes
15.xxxx
View Page # 16 on...
http://www.dhs.gov/xlibrary/assets/press_opt_ifr.pdf
2) CIP information can be found at...
http://nces.ed.gov/pubs2002/2002165_2.pdf
The "-----" mentioned under 15.1502 is just a cross reference..read above PDF.
Cross-references. Cross-references or crosswalks are provided to refer the CIP user to codes/programs within the CIP. Their primary purpose is to refer the CIP user to a more appropriate code/classification for use in reporting a program. Cross-references are located immediately program that they are related to and are preceded by 5 dashes in the place where a CIP code appear. The title of the Series or program that the CIP user is referred to is listed, followed under ...) instruction that indicates which program should be considered for use. Cross-references made to specific programs (i.e., 6-digit programs) or to 4- or 2-digit groups. Example 1: 14.0701 Chemical Engineering ----- Chemistry. (Report under 40.05 Series) ----- Chemical Technology/Technician. (Report under 41.0301)
The MBA is mentioned as a mere reference to ensure that you are sure of the CIP code for your degree.
Lastly the I-20 you receive should have a CIP code like 52.XXXXX which is clearly not listed on the official release.
Unfortunately...MBA's will not be eligible. However, if you are pursuing a degree like Masters in Engg. Mgmt (MEM) you would be.