Just received a letter from INS answering my inquiry on different A# for I-485 and approved I-140. It says:" Due to the high volume of applications during this period, A numbers were assigned to each incoming file. These A numbers will be connucted with any previous A numbers the applicatn my have on file. This information will be interfiled with the pending application/petition for review at a later date by an officer. You will not need to contact USCIS again with this information. "
Those who have the same situation, now you could relax.