Trying to get a value to remain copy into a cell and remain the same when condition met

Close! Hm. Should have mentioned some other things I suppose. I didn't realize this would be so complicated! I was hoping it was more of a simple answer than this.

1) The value will not always be in T73. It will always be in Column T, but it will move down as items are added above it. ...

Ok. I'll upload load the actual one after a bunch of editing out...