LAST_IMPORT macro
          The time returned by LAST_IMPORT is the time at which data was last queried from the source, not the time at which it was successfully loaded into a table.
         
         Typically, LAST_IMPORT is used with load queries and LAST_EXECUTED is used with scripts. However, LAST_EXECUTED can be used with load queries if required.
When you use LAST_IMPORT, this is the order of events:
- The Modeling Service receives the request to run the load query.
           The time at which this happens is the time used by LAST_IMPORT, which receives the command from the user interface or from an API.Note: Network communication can cause a delay between clicking the button to run the macro and the start of the process.
 - The query is sent to the Data Lake or to another data source.
 - The answer is received from the data source.
 - Data is written to the staging tables.
 
If the load query finishes successfully, the LAST_IMPORT time is displayed here:
- In the Last Loaded field on the Load Queries tab.
 - In the application logs, the Load Query Execution Start event logs the start time of the load query. 
           Note: The Load Query Execution Start event is not enabled by default.
 - In the LastSuccessfulLoad column in the load queries object table.