I remember back in 2002 or so... my band recorded a record, spent like $4000 back then, which was insane.
I went back into studio and redid all the lead guitar parts after my gutiarist left, and he never said anything.
And the audio engineer redid some of my bass parts cause I had no strong slap hand back then.
Good times! I guess when you're young and you want the best product, people can put ego aside.