Enterprise Administration > Windchill Export and Import > Understanding Windchill Export and Import > EPMDocuments > Attribute Limitations
  
Attribute Limitations
Because the attributes of CAD documents are tightly related to content files, there are limitations on which attributes can change outside the workgroup manager clients. The following import actions are not supported for CAD documents:
Creating a new object with new identities
Substituting for an existing object
Ignoring an object
Mapping rules enable you to change any attribute specified in an import or export XML file. When you are working with CAD documents, only the following attributes should be changed by mapping rules:
name
number
CADName
description
folderpath
versionInfo
lifecycleInfo
teamIdentity
When you are importing CAD documents, do not use mapping rules to change the following attributes:
ownerApplication
authoringApplication
epmDocType
epmDocSubType
extentsValid
contentItem
iba
Do not use mapping rules to change any attributes on other EPM link objects, including:
EPMMemberLink
EPMReferenceLink
EPMVariantLink
EPMContainedIn
EPMDescribesLink
EPMBuildLinksRule
EPMBuildHistory