CLI Asset Migration Queries and Batches
To migrate assets between OCM instances, I have used the CLI commands "download-content" & "upload-content", or "transfer-content".
Using "download-content" is good because you can specify a query on content, so it doesn't include all assets of the repository. But it doesn't let you specify batch sizes, and often fails because the size of the export is too large (even on queries containing <200 assets).
Using "transfer-content" is good because you can specify batch sizes, but you cannot use queries, which subsequently targets all assets. This is not ideal when content has already been migrated, and you'd like to migrate a newer batch later in time.