asirghi on "DSE Migration 3.0=>3.1.1 Solr Schema Parsing Failed: Invalid field property: positionIncrementGap"

When we replaced DSE 3.0 with 3.1.1 and tried to post Solr schema.xml solrconfig.xml and Create core we got a strange exception:

<lst name="responseHeader"><int name="status">500</int><int name="QTime">303</int></lst><lst name="error"><str name="msg">Schema Parsing Failed: Invalid field property: positionIncrementGap</str><str name="trace">org.apache.solr.common.SolrException: Schema Parsing Failed: Invalid field property: positionIncrementGap
	at org.apache.solr.schema.IndexSchema.readSchema(IndexSchema.java:687)
	at com.datastax.bdp.cassandra.index.solr.CassandraIndexSchema.readSchema(CassandraIndexSchema.java:48)
	at org.apache.solr.schema.IndexSchema.<init>(IndexSchema.java:178)
	at com.datastax.bdp.cassandra.index.solr.CassandraIndexSchema.<init>(CassandraIndexSchema.java:42)
	at org.apache.solr.core.CassandraCoreContainer.create(CassandraCoreContainer.java:246)
	at com.datastax.bdp.cassandra.index.solr.SolrCoreResourceManager.createCore(SolrCoreResourceManager.java:271)
	at com.datastax.bdp.cassandra.index.solr.CassandraCoreAdminHandler.handleCreateAction(CassandraCoreAdminHandler.java:121)
	at org.apache.solr.handler.admin.CoreAdminHandler.handleRequestBody(CoreAdminHandler.java:144)
	at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:135)
	at org.apache.solr.servlet.SolrDispatchFilter.handleAdminRequest(SolrDispatchFilter.java:615)
	at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:206)
	at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:155)
	at com.datastax.bdp.cassandra.index.solr.CassandraDispatchFilter.doFilter(CassandraDispatchFilter.java:92)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at com.datastax.bdp.cassandra.audit.SolrHttpAuditLogFilter.doFilter(SolrHttpAuditLogFilter.java:194)

After all positionIncrementattributes were removed, we got the same exception which stuck on multiValued attribute.
So what's the problem here.

Used schema was:

<?xml version="1.0" encoding="UTF-8" ?>
<schema name="test" version="1.5">
	<types>
		<fieldType name="string" class="solr.StrField" sortMissingLast="true" />
		<fieldType name="boolean" class="solr.BoolField" sortMissingLast="true" />
		<fieldType name="binary" class="solr.BinaryField" />
	    <fieldType name="date" class="solr.TrieDateField" precisionStep="0" positionIncrementGap="0"/>
	    <fieldType name="tdate" class="solr.TrieDateField" precisionStep="6" positionIncrementGap="0"/>
	    <fieldType name="int" class="solr.TrieIntField" precisionStep="0" positionIncrementGap="0"/>
	    <fieldType name="float" class="solr.TrieFloatField" precisionStep="0" positionIncrementGap="0"/>
	    <fieldType name="long" class="solr.TrieLongField" precisionStep="0" positionIncrementGap="0"/>
	    <fieldType name="double" class="solr.TrieDoubleField" precisionStep="0" positionIncrementGap="0"/>

	    <fieldType name="text_general" class="solr.TextField" positionIncrementGap="100">
	      <analyzer type="index">
	        <tokenizer class="solr.StandardTokenizerFactory"/>
	        <filter class="solr.LowerCaseFilterFactory"/>
	      </analyzer>
	      <analyzer type="query">
	        <tokenizer class="solr.StandardTokenizerFactory"/>
	        <filter class="solr.StopFilterFactory" ignoreCase="true" words="stopwords.txt" enablePositionIncrements="true" />
	        <filter class="solr.LowerCaseFilterFactory"/>
	      </analyzer>
	    </fieldType>
	</types>

	<fields>

		<field name="key" type="string" indexed="true" stored="true" required="true" />
		<field name="state" type="int" indexed="true" default="1" />
		<field name="version" type="int" indexed="true" stored="true"/>
        <field name="stamp" type="date" indexed="true" stored="true" required="true" default="NOW" />
        <field name="_version_" type="long" indexed="true" stored="true"/>

	   <dynamicField name="*_i"  type="int"    indexed="true"/>
	   <dynamicField name="*_s"  type="string"  indexed="true"/>
	   <dynamicField name="*_l"  type="long"   indexed="true" />
	   <dynamicField name="*_txt" type="text_general"    indexed="true"/>
	   <dynamicField name="*_b"  type="boolean" indexed="true"/>
	   <dynamicField name="*_f"  type="float"  indexed="true"/>
	   <dynamicField name="*_d"  type="double" indexed="true"/>
	   <dynamicField name="*_dt" type="date"    indexed="true"/>
	   <dynamicField name="*_binary" type="binary"    indexed="true"/>
	   <dynamicField name="*_ref" type="string" indexed="true"/>

	   <dynamicField name="*_i_li"  type="int"    indexed="true" multiValued="true" positionIncrementGap="100"/>
	   <dynamicField name="*_s_li"  type="string"  indexed="true" multiValued="true" positionIncrementGap="100"/>
	   <dynamicField name="*_l_li"  type="long"   indexed="true" multiValued="true" positionIncrementGap="100"/>
	   <dynamicField name="*_txt_li" type="text_general"    indexed="true"  multiValued="true" positionIncrementGap="100"/>
	   <dynamicField name="*_b_li"  type="boolean" indexed="true"  multiValued="true" positionIncrementGap="100"/>
	   <dynamicField name="*_f_li"  type="float"  indexed="true"  multiValued="true" positionIncrementGap="100"/>
	   <dynamicField name="*_d_li"  type="double" indexed="true"  multiValued="true" positionIncrementGap="100"/>
	   <dynamicField name="*_dt_li" type="date"    indexed="true"  multiValued="true" positionIncrementGap="100"/>
	   <dynamicField name="*_binary_li" type="binary"    indexed="true"  multiValued="true" positionIncrementGap="100"/>
	   <dynamicField name="*_ref_li" type="string" indexed="true" multivalued="true" positionIncrementGap="100"/>

   		<field name="text" type="text_general" indexed="true" stored="false" multiValued="true" positionIncrementGap="100"/>
	</fields>

	<uniqueKey>key</uniqueKey>

  	<copyField source="*_txt" dest="text"/>
  	<copyField source="*_txt_li" dest="text"/>

</schema>