I'm using the latest version of LTspice and found that switching between simulations does not work well anymore. If you switch between simulation types the information from your last simulation gets loaded into your new one. The previous version of LTspice was smart enough to see what you already had on your schematic and used it. Now I have to manually switch by placing semicolons in front of my different simulations to comment them out and then removing the semicolon and adding a period in front of the simulations I want to execute. I tried to submit a bug via the link within About LTspice which provides an email address LTspice@analog.com, but I did not get any feedback.