It works now after crating z1d Notes on CHG:TemplateSPGLookUp and pushing it in:
also as Ashwanth sugested new AL:
('Detailed Description' = $NULL$) AND ('z1D Notes' != $NULL$)
Detailed Description= $z1D Notes$
This solution (remove mapping for Description field in CHG:CRQ:TemplateSearch_015_OpenDialog and CHG:CRQ:TemplateSearch_015_OpenDialogSimple works for me too in a 7.6.04 SP1 env. where the field z1d_Description was being populated by those 2 AL.