LP1335668: Added release notes.

Signed-off-by: Liam Whalen <liam.whalen@bc.libraries.coop>

diff --git a/docs/acquisitions/new_acq_transfer_fund.txt b/docs/acquisitions/new_acq_transfer_fund.txt
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+Upgrade Notes
+
+The process for ACQ Year End has changed.  As well, the functioning of the
+transfer_fund stored procedure has been modified.  
+
+The major changes rely upon a change to acq.fund_allocation.  The change adds two new columns: 
+
+1. fund_amount
+2. conversion_ratio.  
+
+fund_amount is the amount of money allocated to the fund in the currency of the fund. 
+conversion_ratio is the ratio used to make the conversion.
+
+These columns are populated by a new trigger on the acq.fund_allocation table.
+
+The addition of the fund_amount column allows the exchange rates to be modified without changing the values stored in each fund.  Previously, if you modify exchange rates, the values already allocated to funds changed. 
+ 
+The transfer_fund stored procedure has had some of its logic modified, and a new stored procedure return_funds_to_source is added to simplify the logic in transfer_fund. 
+ 
+return_funds_to_source is used in cases where the money is not being transferred to another fund, but, instead, is being returned to the funding source.  
+
+As well, a small fix now allows funds with no money allocated to them to be displayed as $0.00.  Finally, a number of PgTap tests are included to check these changes.