Issues transfering NB HMI program via USB stick

[CX_Luigi 1]

i have to transfer program to a remote NB5Q so to avoid installing software and ask cabling to the technician at location, i choose to pass the program and load into the touchscreen with the USB key. All supposed went well until i was sent pictures of the transferred program and found some buttons with custom created graphics  were missing. I thought all resources of a HMI program were included on the .pkg file, but evidently this not the case, or more likely i haven't created a good package. My questions are as follows:

- i transfer the .pkg file found under /temp directory, that had the correct date following the HMI compilation, is it the correct location?

- the .pkg file contains all the resources (including custom graphics) following the compilation or needs to be specified prior to that?

- regarding the transfer of the whole HMI software, may it be that the whole HMI directory created by NB-Designer should be transferred to USB disk rather than pkg? The manual supplied with NB-Designer, while generally good, are rather terse on the subject