About rescale result

Today I rescale my “Aggressive Trend Scalper” for 55% and “Tendency Forex V2” for 18%.
The result of “Tendency Forex V2” looks normal.
After rescale 55%, “Aggressive Trend Scalper” looks PL is -55%.
@MatthewKlein Could you please tell me the reason?
Thanks,

@MatthewKlein In addition, I still have another account which has several clients to copy for now ( Many thanks to their great trust and long term support. ).
If I also rescale this account, will the clients need to change their percentage fo scaling?
Thanks,