why the Update and delete Cannot Use the Temp Table?

[MaxGorGor]

why the Update and delete Cannot Use the Temp Table?

[borisdj]

In code TableInfo.cs there is comment regarding this:

if (tableInfo.BulkConfig.UseTempDB == true && !isExplicitTransaction && operationType != OperationType.Insert)
{
    throw new InvalidOperationException("UseTempDB when set then BulkOperation has to be inside Transaction. More info in README of the library in GitHub.");
    // Otherwise throws exception: 'Cannot access destination table' (gets Dropped too early because transaction ends before operation is finished)
}

[borisdj]

Now they can with explicit transaction.
I have updated previous comment.