The allocation date of treatments can be amended by following the below steps:
Go to 'Patient' > 'Financial' > 'Purchases'. See below:
To change the allocation date simply select the magnifying glass located next to the treatment. See below:
The below dialog box will then appear. To amend the allocation date simply select the pencil under the allocated date column and select the correct date. See below:
Select 'Save' to update.