My spouse and dependent came to US on F2 visa and her status was changed into h4B last year. Since I am resident alien in US based on the my time in US (also my spouse and dependent they both meet substantial prescience test ) , I need to file a W7 for my wife and dependent. However my spouse and dependent never left US and do not have a VISA stamped on the passport. Where as w7 wants me to provide a visa number on the form. We have a status change letter I797 from USCIS which has a EAC serial number.
Should I just input this number as VISA number and attach a copy of this document?
Anyone has any input what information do I need to provide on this W7 Visa field?