Over a period of about six years the Gemini Planet Imager instrument has carried out a host of adaptive-optics fed high-contrast imaging observations from the Gemini South telescope in Chile, including the successful GPIES exoplanet direct imaging survey. GPI will now be upgraded for increased sensitivity and science capabilities, and will perform a new exoplanet imaging survey from Gemini North telescope in Hawaii. The disassembly and reintegration of the instrument as GPI 2.0 will take place at the University of Notre Dame in Indiana, USA. Here we describe results of tests we have conducted remotely of the GPI instrument before shipment from Chile. These tests were originally designed for the first incarnation of the instrument to accommodate science program imperatives and to ensure seamless compatibility with the host observatory. We have now performed those tests anew wherever possible, so as to assess the state of the instrument following its years-long science campaign (during which the instrument was not re-tested). These tests serve to flag potential areas of concern as early as possible and to help track changes during the shipment process. These tests involve the performance of the optomechanics, the detectors, the coronagraph, and other aspects of the instrument's hardware and software. We present the high-level results of this baselining process, describe their implications and limitations, and compare them with results from tests performed when the original instrument was shipped to Chile in 2013.