Returning abnormal cells after lletz

Hi, just wondering if anyone has experienced something similar. I’ve had positive hpv results from my first smear when I was 24 I’m now 27. I had been sent for numerous colposcopy’s/biopsy’s after finding cin2 and had the lletz treatment earlier this year. The treatment was successful and the letter stated they had managed to remove all the cells. Last month I went for my 6 monthly smear after the lletz and i have just received the letter today saying I’m still hpv positive and have found borderline cell changes. Has this happened to anyone else?