Fixing issues after changing product attribute type from varchar to text
In some cases there is a need to change the backend type of a catalog product attribute from varchar to text. The purpose of this change is to get more than 255 characters space for a string value. In this article I will cover the situation when problems occur after changing the backend type of an attribute. The Problem If the backend type of an attribute is changed, e.g. via install/upgrade script, Magento does not automatically copy and clean up old values….