If you are not on at least this version, you cannot import diagrams into Confluence/JIRA from Gliffy Online unless you upgrade.
Gliffy Online is usually ahead of Confluence/JIRA in regards to features and capabilities, so we cannot guarantee that they will always be cross-compatible. We would advise to always create the diagram in the same program you are going to be using it in whenever possible. That way it guarantees the compatibility in that product.
If you have further questions, please email firstname.lastname@example.org.