Both PLAXIS 2D CONNECT Edition V20 Update 2 and PLAXIS 2D CONNECT Edition V21 offer the ability to convert older files from PLAXIS. This means that older PLAXIS files with the *.P2D can directly be converted to PLAXIS 2D CONNECT Edition V20 Update 2 or PLAXIS 2D CONNECT Edition V21 right from the Input program!
This includes files last saved in PLAXIS 2D 2010, PLAXIS 2D 2011, PLAXIS 2D 2012 and PLAXIS 2D Classic (all with the file extension *.P2D)
For more details on the file conversion options, please see Conversion of PLAXIS 2D files