Will I lose my case if I cash a check from my former employer for wages originally owed but paid after I filled the lawsuit?

I was in jail for 18 days. I had 19hrs of ot from the 3rd and 4th of Nov. I ended up going to jail Nov 5th. According to my former employers records I was terminated Nov. 7th. I got outta jail Nov. 23rd which was a sun. Nov 24th 7:01am I was calling to find out why I haven't been paid. I was told I'd have to wait for them to verify I did indeed work the 19hrs. While I was in jail my wife was in constant contact with them informing them I haven't been paid. My former employer is temp agency and they informed my wife she needed to get in contact with the shift supervisor on the shift I work and have him verify with my employer that I indeed worked. I served them both a demand for payment firm and small claims notice. This was all done on the 25th of Nov. They've since set me a check for what was originally owed. Would I lose if I were to cash it?