Elasticsearch 7.17.3 to OpenSearch 2.16 dashboard object import fails

Versions (relevant - OpenSearch/Dashboard/Server OS/Browser):
Source - Elasticsearch 7.17.3
Destination - OpenSearch 2.16

Describe the issue:
When importing Elasticsearch 7.17 dashboard objects to OpenSearch 2.16 an error message about version incompatibility is displayed.

The file could not be processed due to error … has property "index-pattern" which belongs to a more recent version of OpenSearch Dashboards [7.11.0]. The last known version is [7.6.0]"

An error is expected given Elasticsearch 7.17 is well past the OpenSearch fork version (7.10) and compatibility was broken. For indices, we would normally migrate via Logstash but I note 7.17 is not included in the compatibility matrix nor do I think it would be useful for dashboard objects.

I found a similar discussion where the only solution was to recreate the dashboards. Is there a better method for migrating dashboards from ES 7.17 to OpenSearch 2.16?

Thanks