Will my non-OA multiple entry visa remain valid if I leave Thailand and return?

Searched and just didn't find a suitable answer so please excuse if this has been covered and I glazed over it.

Scenario :

I am currently on 2nd year of non-OA visa, good until late April.

I have prints of original visa, now technically expired.

I have prints of required insurance good through late April.

The original visa is 'multiple entry'.

Neither 'stamp' in my passport shows any reference to 'multiple entry', year 1 or 2, that I can tell.

I may need to return 'home' for a short period. My biggest question is, will my multiple entry still be honored? What should I do in anticipation when leaving and returning? I expect to have prints of the original visa and the current insurance going and returning.

What can/should I expect?

Thanks!