Changing the old into the new means change, tolerance and starting all over again. The key point is to change words, including improvement, revision and improvement. Of course, this change is positive, two-way, not passive, waiting for the other party to make blind changes, otherwise the old will not become new.
If you understand it as substitution, it is inconsistent with the following "the past was blocked, and now I am satisfied." Obviously, the past is blocked. By improving the relationship between the two sides, it has now become satisfactory, just as cold flowers will thaw soon in spring and the relationship will be eased. Naturally, I will gradually be satisfied.
I wish you a smooth relationship!