Tested again. PCmanfm-qt is completely UNRELIABLE! Dangerous to use! Do NOT use it. When moving files from memory card to hard disk, it randomly changes the date! Krusader does not do this. This is un UNFORGIVABLE Bug!!!! How could this pass through the testing phase???? And how com Lubuntu installs it as standard file manager???
Must add more information: moving files from a memory card had this effect
Move sets date one month forward