Datatable is caching data until it's selected

I seem to be having a problem with a straight forward mdbdatatable where I send it a block of data (which it displays perfectly fine) then when I send it a different block of data (same format just different values) the datatable renders the OLD data.

Until I click on the data table. At which point it renders the new data correctly...

Here's a screenshot of the code:

Here's the first set of data: Here's the first set of data:

And here's the second set of data:

Notice the data rendered above the datatable has only 2 rows of data but the datatable has much more.

Then all I have to do is "Click" on the rendered datatable for the data to be rendered correctly:

Is there any way to "clear" the datatable prior to sending the new set of data? Also, in checking for accessibility it looks like I can't "tab" into the datatable or any of the controls (my client is a US Gov't client so the application MUST pass a 508 validation check).

Thanks