What happens if my HSP visa let’s rejected and my current Engineer visa expires?

Hi guys I applied yesterday to switch from Engineer visa to HSP as I have reached 70 points, the reason I am switching is because I keep getting 1 year visa, and I want to get PR eventually.

They confirmed the points with me at the counter and I explained every document and how I reached 70 points, my company is big and they did sponsor several HSP visas before so I am probably just overthinking but what happens if my current visa expires and for some reason the HSP visa takes long and it gets rejected in the end? Will I be able to apply again for Engineer visa?

by ThePirateKiing