You have given me an example in where the context is pretty straight forward. I have provided an example where "until" does not necessarily tell us of the future. In the context that you suggest, we would normally understand it the way you suggest.
There are a number of examples of "heos" being used in Scriptures to mark a limit - and saying nothing about the future. "Heos" is translated into "til, unto, or until". They refer to termporal references of time.
And thou, Capernaum, which art exalted unto heaven, shalt be brought down to hell: for if the mighty works, which have been done in thee, had been done in Sodom, it would have remained until this day. Mat 11:23
Does this mean Sodom would have been destroyed the day after Jesus said this?
A bruised reed shall he not break, and smoking flax shall he not quench, till he send forth judgment unto victory. Mat 12:20
Does this mean that after judgment, He will break a bruied reed or put out smoking flax?
For verily I say unto you, Till heaven and earth pass, one jot or one tittle shall in no wise pass from the law, till all be fulfilled. Mat 5:18
Does this mean that there will be no more love after "heaven and earth pass away"?
Therefore Michal the daughter of Saul had no child unto the day of her death. 2 Sam 6:23
Naturally, Michal had children after her death, right?
I think we have said enough about this...
Regards