Set last sequence number for couchbase lite

We are trying to load initial data to couchbase lite for ourselves. After getting the last sequence number from sync gateway GET /db call and using update_seq as latest sequence number, how do I set same sequence number to my couchbase lite database? In .net couchbase lite SDK, there is a property LastSequenceNumber but it is deprecated, is there other way to set last sequence number in couchbase lite through either .net api? The platform is windows, using .net couchbase lite SDK 1.3.