Recover Subtype version program

Wed Apr 12 17:59:05 EDT 2006

Is there a way to recover a version of a subtype program???

I made a upload of a file just to add some abap code and the rest of the
zsubtype program disapeared... is there a posibility to recover it? if
yes..How?

any help would be appreciated... I lost about several user defined methods
I've created in the past days of work..

Oh God!!
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