No, there is no need to join the tables. Do you really need the Version and Ins_date fields in your model, they look like audit fields only? If not, simply remove them from your load script.
If you do really need them, then add a qualify:
Qualify Version, Ins_date;
... your script as posted in your question (unchanged) ...
UnQualify *;
Logic will get you from a to b. Imagination will take you everywhere. - A Einstein