I migrated from 4.4.0-->5.0.1 and module "If Field Value Is Null" and "Select Value Type" checked (that means if any date object is NULL then set it for example 1900-01-01) option to include also empty string values is by default 'Y' in "Select Value Type" option and 'N' in "Select Field" option.

Seems like a minor detail but some of my loadings used one option ("Select Value Type") some other used ("Select Field") and outcome was not so nice.

I dont know if this is a bug but my logic tells that nonexistent feature in previous version should always upgrade to this option DISABLED not enabled.