You are able to contra off the original entries (credit note/negative receipts etc) and allocate these contra
entries off at the same year period and then re-enter and then allocate at the correct year/period you wanted.
Note: If you have the Corrections module you can delete the transactions and re-enter and then you will be able to allocate at the required year/period.
Support can review to determine whether it can be amended or not but depending on how many transactions involved, there is no guarantee we can resolve this.
To resolve this - our support team will need to investigate, run scripts or liaise with the hosting or development teams. Any Issues with contacting us, please see the following Get support in Dimensions.