Follow these steps to edit an unposted contribution in the proof list.

Step 1:
While in Contribution Manager find the entry in the Contribution Entry Log that you want to edit and right click on it.  From the small menu that appears click Edit Selected Entry... or highlight the entry in the Contribution Entry Log and click on the Edit button Note: You can also delete an entry from the Contribution Entry Log by right clicking on the entry and clicking Delete Selected Entry...
Step 2:
Now in the entry section of the screen you can edit the follow parts of the entry. Type. (Cash, Check, Credit Card, Other) Total gift amount. Check number. Account name. Split Accounts & Amounts. Tax/ Non-Tax Deductable
Step 3:
Once you are done making the changes to the transaction just click the Save button to update the entry in the Contribution Entry Log.