ContributionsMost RecentMost LikesSolutionsRe: Using the API to add Contributors to KB Articles After digging a bit more, I've found this documentation indicating that contributors can be added using the V1 API: https://community.lithium.com/t5/Developer-Documentation/bd-p/dev-doc-portal?section=commv1&leaf-id=Message.edit#Message.edit Re: Can I post a new message with a V1 API with a past message.post_time? aniciu- were you ever able to figure this out using the V1 API over HTTP? I'm getting the same result you mentioned above, both with and without URL encoding the timestamp. I'm definitely hoping to keep my creation timestamps intact through our migration. Using the API to add Contributors to KB Articles Our company is about to migrate an existing knowledge base into the Lithium environment. Among other metadata, we are hoping to preserve a list of contributors for each of our 12K+ knowledge base articles. I've seen some good resources in the Developer Documentation area ( like this ) and the Developer Knowledge Base, but I haven't come across anything that showsor explains how contributors could be added at the time of message creation or after the fact via updates. If anyone has successfully programmatically added contributors at message creation time or after the fact, I'd absolutely appreciate any pointers or tips you can provide. Thanks!