Your Bible inputs the name Jehovah in places in scripture for why you should doubt the removal of the name of Jehovah from other Bibles.
Contentions remains.
I do not know what your Bible version says in John 1:18 & John 6:46 but no man had seen God the Father at any time, yet it was the Lord named Jehovah that had appeared to Abraham, Isaac, Jacob & Moses.
Exodus 6:12 And God spake unto Moses, and said unto him, I am the Lord: 3 And I appeared unto Abraham, unto Isaac, and unto Jacob, by the name of God Almighty, but by my name Jehovah was I not known to them.
And yet still, Jesus testified that Moses had written of Him ( John 5:46-47 ) and that scriptures testified of Himself ( John 5:39-40 ).
Jesus had testified that Abraham had seen Him & had rejoiced in His day & Jesus even declared that He had existed before Abraham as the "I AM" and almost got stone for it in John 8:56-59
I believe Jehovah is also the name of the Father & the Holy Spirit as the name of God as Jesus is for us today, but for the Lord Jehovah that had appeared to men, it was not the Father, but the Son before His incarnation.
So does your Bible version say anything different in regards to those verses and if not, how do you rectify that it opposes what you believe?