Package uses conflict org.springframework.orm.jpa.vendor - spring

Question

In my project, I am getting package uses conflict with spring bundles. I used the techniques given in this link
http://njbartlett.name/2011/09/02/uses-constraints.html
I am getting package uses conflict for this:
initial#reference:file:../../../my_project_maven/my_project/myproject-core/ [2158]
Package uses conflict: Import-Package:org.springframework.orm.jpa.vendor; version="2.5.6"
I seached for bundles exporting org.springframework.orm.jpa.vendor; version="2.5.6" and found this:
osgi> p org.springframework.orm.jpa.vendor
org.springframework.orm.jpa.vendor; version="2.5.6"<org.springframework_2.5.6 [2201]>
osgi>
So I opened up the springframework jar and saw the uses for the exported package and found these
javax.persistence,
javax.persistence.spi,
oracle.toplink.essentials.sessions,
org.apache.openjpa.persistence,
org.eclipse.persistence.sessions,
org.hibernate,
org.springframework.dao,
org.springframework.jdbc.datasource,
org.springframework.orm.jpa,
org.springframework.transaction
Out of the above, the only ones that my core bundle is importing are
javax.persistence;version="1.0.0"
org.springframework.dao;version="2.5.6"
org.springframework.orm.jpa;version="2.5.6"
Springframework is importing javax.persistence version of 1.0.0 and my core bundle is also importing 1.0.0 so there are no version conflicts there. Also these imports
org.springframework.dao;version="2.5.6"
org.springframework.orm.jpa;version="2.5.6"
are exports from springframework bundle, so no version conflicts there too.
There are no version conflicts in the org.springframework.orm.jpa.vendor package uses and the imports in my core bundle. I do not understand what is causing this package uses conflict. Is there an easy way of debugging these?