Only if already exists in file, use GrabBag. For strict OOXML, replace namespaces with transitional names. Change-Id: Idc1f99b7c096e87558fdb78278a534ffd2bc5587 Signed-off-by: Aron Budea <aron.budea@collabora.com> Reviewed-on: https://gerrit.collaboraoffice.com/c/online/+/8590 Tested-by: Jenkins CPCI <releng@collaboraoffice.com> Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com> (cherry picked from commit d8f3abfb7044be0e7e1c56602aae506911ad33b8) Reviewed-on: https://gerrit.libreoffice.org/c/core/+/210362 Tested-by: Jenkins Reviewed-by: Xisco Fauli <xiscofauli@libreoffice.org>