Error Copying Database between different Elastic pools

[Hannimal]

I'm Trying to copy a Database between to elastic pools, the origin is a "Premium: 125 eDTU" and the destination is a "PremiumRS: 125 eDTU". I keep getting an error: "Long running operation failed with status 'Failed'. Additional Info:'The database edition 'Premium' cannot be different than the elastic pool service tier which is 'PremiumRS'". The error is pretty clear, but i can´t seem to be able to choose the destination WidthoutElasticPool() so that i can after update to the existing Elastic pool. This is the code i'm using:

`var originSqlServer = await azure.SqlServers
.GetByResourceGroupAsync(model.Origin.ResourceGroup, model.Origin.SqlServer, ct);
var destinationSqlServer = await azure.SqlServers
.GetByResourceGroupAsync(model.Destination.ResourceGroup, model.Destination.SqlServer, ct);

var templatedb = originSqlServer.Databases.Get(model.Origin.Database);

var database = await destinationSqlServer.Databases
.Define(model.Destination.Database)
.WithExistingElasticPool(model.Destination.ElasticPool)
.WithSourceDatabase(templatedb)
.WithMode(CreateMode.Copy)
.CreateAsync(ct);

database = await database
.Update()
.WithExistingElasticPool(model.Destination.ElasticPool).ApplyAsync(ct);`