GETFILE() does change the "SET PATH" if a result is returned so you need to reset your path name after retrieving a result. Something like:

lcPath = SET( "PATH" )
lcFileName = GETFILE( lcFileName, "imp",  "Import File" )
SET PATH TO lcPath

While looking this up I found a bug fix comment in the same program relating to the use of LOCFILE() vs. GETFILE() which I found interesting. I'll just copy the comment here:

* 1. Replace LOCFILE() function with GETFILE().  Primary difference is when
*    the user presses "cancel" on GETFILE() an empty string is returned. . .
*    OTOH, when pressing "cancel" with LOCFILE() VFP displays an error with
*    which one of the options cancels VFP entirely -- not too cool.

Scott