OPT export remoces terminologies from coded text

I have an archetype with a coded text and added LOINC and SNOMED-CT as possible terminologies for that node. When exporting an OPT that contains that archetype, only LOINC appears and it should export all the terminologies in many referenceSetUri:

<children xsi:type="C_CODE_REFERENCE">
<rm_type_name>CODE_PHRASE</rm_type_name>
<occurrences>
<lower_included>true</lower_included>
<upper_included>true</upper_included>
<lower_unbounded>false</lower_unbounded>
<upper_unbounded>false</upper_unbounded>
<lower>1</lower>
<upper>1</upper>
</occurrences>
<node_id />
<referenceSetUri>terminology:LOINC</referenceSetUri>
</children>