SYMPTOM:
In Strategy Analytics Desktop and Strategy Web 10.3, when creating new attributes with the function "ToDateTime(Concat(月@ID, "/1/", 年@ID))", the "月" and "年" disappear after validation
Before Validation

After Validation

STEPS TO REPRODUCE
CAUSE:
This is known issue in Strategy Desktop and Strategy Web10.3
ACTION:
This issue has been fixed in Strategy 10.4.3 or above for Platform release and in Strategy 10.6 or above for Feature release.
The Strategy Internal Reference Number for the issue discussed in this technical note is DE31052.