Hi, I´v just installed autocad 2015 64bits on my new computer, same one that i had installed on my old one, but when I try to open a file, many lines appear ( they are not there for the same file on the old computer)I can´t select them, but when I copy and paste they appear on the new object.they are spreaded into the layers and Ican´t erase them. Whay am I doing wrong?here is a print with the lines.thanks

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