Hold on. I don't mean to get technical with semantics, but you used the "if" word. Where did that come from?
I said IMHO truth evolves with the times as more knowledge is brought to bear on it.
Just because the Ganges is considered a god to a certain section of people does not necessarily make it truth to us, even though it is a truth to them.
I agree with you.
And "if" (that transitional word again) something (a truth in this case) changes and evolves due to further and heretofore unknown knowledge and evidence, then it is no longer truth, and as you say "wasn't true", thus the newer conception may become the accepted truth.
And yet still further knowledge may replace that newer conception of "accepted" truth to become an even newer version of truth.
Again, I am not referring to "absolute truth" here, but the majority of what is accepted to be the truth.
Once upon a time the earth was thought to be flat.
That was the "accepted truth" of the times, but it was replaced with an absolute truth that the earth is more or less round.
I would say that absolute truth is truth that is beyond dispute and always valid regardless of context or parameters.