The CRA recently released a letter which discusses whether a taxpayer's estate was entitled to donation tax credits claimed for a charitable gift made by an individual in her secondary will. The use of a Primary and Secondary Will may be for a number of reasons, although typically in Ontario  the assets that don't require probate are placed in a different will to those assets that do require probate.   In this way some of the probate tax can be avoided.   The letter discusses various issues such as whether the trustees had the discretion to make a gift to a Charity and the factors considered when determining whether a donation to a charity has been made by a taxpayer in their will.

The letter can be accessed here.