Create a content, insert a flash, save.
Open this content, delete the flash, insert the same file --> error :

Caused by: org.ametys.plugins.repository.RepositoryIntegrityViolationException: javax.jcr.ItemExistsException: /ametys:root/ametys:sites/univangersmedecine/ametys-internal:contents/19/2c/index-contenu-simple-7/ametys:content/data/ent.swf
at org.ametys.plugins.repository.metadata.jcr.JCRFolder.addFile(JCRFolder.java:183)
at org.ametys.cms.transformation.docbook.DocbookTransformer.transform(DocbookTransformer.java:101)
at sun.reflect.GeneratedMethodAccessor133.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.ametys.runtime.plugin.component.PluginsComponentManager$ComponentInvocationHandler.invoke(PluginsComponentManager.java:159)
at $Proxy24.transform(Unknown Source)
at org.ametys.cms.workflow.EditContentFunction._synchronizeRichTextMetadata(EditContentFunction.java:1425)
at org.ametys.cms.workflow.EditContentFunction._synchronizeMetadata(EditContentFunction.java:955)
at org.ametys.cms.workflow.EditContentFunction._synchronizeMetadataSetElement(EditContentFunction.java:307)
at org.ametys.cms.workflow.EditContentFunction._bindAndValidateContent(EditContentFunction.java:226)
at org.ametys.cms.workflow.EditContentFunction.execute(EditContentFunction.java:126)
... 104 more
Caused by: javax.jcr.ItemExistsException: /ametys:root/ametys:sites/univangersmedecine/ametys-internal:contents/19/2c/index-contenu-simple-7/ametys:content/data/ent.swf
at org.apache.jackrabbit.core.NodeImpl.internalAddChildNode(NodeImpl.java:787)
at org.apache.jackrabbit.core.NodeImpl.internalAddNode(NodeImpl.java:735)
at org.apache.jackrabbit.core.NodeImpl.addNodeWithUuid(NodeImpl.java:2200)
at org.apache.jackrabbit.core.NodeImpl.addNode(NodeImpl.java:2155)
at org.ametys.plugins.repository.metadata.jcr.JCRFolder.addFile(JCRFolder.java:178)
... 115 more