delay and out of sequence TEST

Hello,

I have done a test updating the schedule at a specific data date (last week):

1- Updating without correcting the out of sequence activities----> result: 32 days of delay

2- Updating with correcting the out of sequence -----> result: 10 days of delay.

Question: Do I have the right to make the correction of out of sequence to meet the actual scenario on the site in order to give an accurate data or I should not make any changes in the current schedule.??