Can you overlay a PBIT template onto an existing PBIX model?

[NoahLull]

As we have been building out our Power BI library, some of the models out there were built without a themed PBIT template or we have enhanced the standard PBIT template to a newwer version. 

Is there a way to use a new pbit theme on an older model, or do you need to start over fram scratch?

[lbendlin]

You should be able to apply a new template to an existing report.  It may still require some manual adjustments.