@Felipe Chang iirc, it's possible via scripting, but it's pretty dang ugly. set hasparent, parent, matrixType, finally you construct the right matrix template field name, which should be 'matrixoption`+the scriptid of the matrix option field you used in the item template. (you can look at another matrix child of that parent to confirm, it'll be the custom field(s) with a matrixoption prefix, it'll look something like "matrixoptioncustitem1") the value of that field(s) should be set to the corresponding matrix option list value internalid for the item to be converted. save and pray.