Both the prconfig.xml and prbootstrap.properties file must be updated when using split schema.
<env name="database/databases/PegaRULES/defaultSchema" value="rulesSchema_Name"/>
<env name="database/databases/PegaDATA/defaultSchema" value="dataSchema_Name" />
com.pega.pegarules.bootstrap.allclasses.schema=" rulesSchema_Name "
com.pega.pegarules.bootstrap.datatables.schema=" dataSchema_Name "