eVars are not case-sensitive. If you send the same value in different cases (for example, "DOG" and "Dog" ), Analysis Workspace groups them together into the same dimension item. The case of the first value seen at the beginning of the reporting month is used. Data Warehouse shows the first value encountered during the request period.
This happens because the very first value stored in the report suite was exactly with this capitalisation "Text1 Text2|Text3". Now exactly this value will be reported regardless of what capitalisation the new values will be captured in.