This is a follow up to support topic https://community.stardog.com/t/edge-property-example-error/2561, which appears to have been closed a while ago. I've come up against the exact same issue - trying to import a JSON-LD file via the HTTP API (or via the Studio Load Data function) that contains edge properties, into a database with "edge.properties" enabled, and am receiving the message "Could not parse JSONLD: invalid @id value: value of @id must be a string." Has there been any progress on this issue? If not, could you suggest an alternate import format that will support ingestion of edge properties? Thanks!