Maybe you could write a script for replaying your data. We use such scripts for testing MPA-3 devices and writing a logfile with test results. Here I list some commands that we use in our testing scripts, in part they are  not documented:

                ; following commands are at the beginning of the script, in that order:
                messagefile ADCtest.txt    
                ; displays a Messagebox with informal text  
                ; written in file ADCtest.txt

                logprompt EN number      
                ; Opens a dialogbox to enter any text  
                ; with title "EN number" and writes
                ; title and text into the logfile

                openlogprompt   
                ; Opens a new logfile with the name entered  
                ; in the logprompt dialog 

                logtime  
                ; writes time and date into the logfile 

                logwrite !!!!!!!!!! external ADC test !!!!!!!!!!!   
                ; writes that text into the logfile 

; Now follow some commands doing some test measurements and so on, like:

                loadcnf ADCtest.cnf  
                ; load a test configuration

                start  
                ; starts a measurement

mpaname=adcporttest.mpa    
                savempa   ; save test spectra

                logsums   ; write sums into logfile

mpaname=adcportref.mpa    
                submpa   ; subtract reference spectra

mpaname=adcres.mpa
                savempa    ; save result
                logsums   ; write sums into logfile

;... doing more tests

; now finish:
                closelog            
                ; close logfile

                beep
                ; make a sound

                showlog            
                ; opens logfile in notepad

                exit                
                ; exits MPA-3

There are also commands that use the "Fit Rois" capability of MPANT, like

FITROIS   ; send a message to MPANT like clicking
                ; "Fit ROIs" in the MPANT menu, i.e.
                ; makes a single peak Gaussian fit for all ROIs  
                ; in the active Display of MPANT and dumps  
                ; the result into a logfile.  

FITROIS SP_1   ; Similar to the fitroi command, but using the  
                ; argument allows to specify which spectrum  
                ; should be evaluated independently of
                ; which child window is activated in MPANT.  
                ; SP_1 means ADC1 (=ADC1A)