A: Yes, which is a good thing. That means we have made progress and need to reset our progression. If we started 5 weeks ago @ 225 and fail @ 275. Then we restart next week @ 245 essentially go back 3 weight increments. This gives your body a chance to reset with the lower weight and ramp up to the heavier weight the next time.
A: This is a good thing. For Example we do 3 different types of squats (Back, Front, Overhead) So you have recovery time on a given lift before you will see it again.