Prophet Muhammad did not Reveal everything, so He could not be the last Prophet
Islam was never meant to be the last Revelation. The Mystery of God will be finished after the Seventh Angel comes (Revelation 10:7). There is evidence even in the Koran that it is not the Last Revelation. Here is some clear evidence:
"O Ye People of the Book! Surely, our messenger has come
to you to clarify for you, MOST OF WHAT YOU USED TO
CONCEAL of the Book, AND HE PASSES OVER A GOOD
DEAL..." (The Table Spread, V15)
So Prophet Muhammad revealed "MOST OF WHAT YOU USED TO CONCEAL of the Book, AND HE PASSES OVER A GOOD DEAL..." So He did not Reveal the whole thing. There are things that He left out. God did not Reveal the whole thing through Him. Others have to come and complete the Revelations, reveal the rest of the Book, etc.
Surah Ornaments of Gold (Az-Zukhruf)
Akashic Records are the records of remembrance:
Yes, It [the Koran] is an essential part of the Eternal
Tablet (the source of all Scriptures), which we possess. (4)
It is an essential part of the Eternal Table (Akashic Records), but not all of it and not the last one and! There will be more Revelations.
Also the word Khatem can be read as Khatam (Seal). So it may mean the Seal of the Prophets. In our teaching it is explained why both Khatam and Khatem are correct.
He was the Last Prophet in the sense that being Surrendered and Submissive to God is the Greatest Spiritual Realization. So He brought the Highest Spiritual understanding to humanity, so in that sense, He is the Last. He is also the Seal of the Prophets as Islam is the Fourth Seal and if you look at The Greatest Sign (GS - base of our teachings) you will see Islam is the Seal in the GS http://www.maitreya.org/english/gs.htm.
The Scriptures, however, reveal another Revelation as the last One:
7 But in the days of the voice of the seventh angel,
when he shall begin to sound, the mystery of God should
be finished, as he hath declared to his servants the
So the Mystery Of God (Ghiamat, Day of Judgment, etc.) will come at the time of the Seventh Revelation (Angel). This Seventh Revelation, or the opening of the Seven Seals, is THOTH (The Holiest Of The Holies (THOTH), The Last Testament). If we realize this, then not only will we accept Bab/Baha'i teachings but also the teaching of the Mystical Paths (Hinduism, Buddhism, Sufism, etc.).
So we can clearly see that it is God who has sent them all. It is then that we can see there is not a conflict between any of them.
Dogmas bring conflicts. Truth brings Unity!