Our NPO relies heavily on Membership Attributes. We are a wildlife rescue nonprofit and offer symbolic animal sponsorships as a means of membership support. The animal a donor chooses to support is entered as a Membership Attribute. We have been recording this data since we purchased RE in 1990. This attribute is used in many ways: answering donor questions about sponsored animal history, including attribute on renewal mailings, queried for obituary letters when sponsored animal dies, queried monthly for letters sharing updates on sponsored animal. Without this Attribute, we would lose 36 years of data we access daily! This is vital information to our donors and would be catastrophic for our org if this is lost with the transition to webview.