Where is LCC?

I went to the terminal to record profit / loss from closed positions, and there are no LCC shares. I know that they were…. , but now no. Had to look. It turned out that they merged with another company and now have to trade under the ticker AAL.  Набрал в терминале ticker AAL и позиция появилась. I noticed that the difference between the new position and the old one is approximately 10% in my favor and therefore took a profit.
This is what I need? Besides, what if the shares were bought through the ChoiseTrade broker, it would take a very, very long time to wait for the conversion of shares. Would freeze the position, least, for a couple of weeks. It's hard with them. Therefore, I am very glad that this happened with another broker..