rep adjustment to weight override unexpected

## What happened?
Curls suggested 27.5  for 8 from previous 25 at 8.


## What did you expect?
Setting back to 25 still gave me 8 reps, I would have expected 9.
## Steps to reproduce
1. Do one set at 25 x8
2. Look at set in next workout 
3. 

## Version
0.2.0
