1) quick way: no really. One would be:
a) Master Data:
log on to the system here you want to copy FROM and open MANAGE --> MASS -->
choose the required MD type one by one and copy into a file
only in edit mode you will have in the first hidden row the technical names,
you just need to delete the description and the first hidden column and save as csv
log on to your target planning area, go to MANAGE --> MASS --> edit and paste the values, or
alternatively load the file you created from source system (which means you can easily re-use)
b) Transactional data:
log on to the system here you want to copy FROM
Have a view there with your KF on their correct planning level,
display only one bucket = e.g. the current year so you are sure you really get all data,
re-format and save as csv file
and upload via WEBUI file upload.
Paste via Excel will not work as many of the KF are write-protected
2) KF have to be loaded by Base Planning Level, that means for each BPL one separate file. No need for HCI load, WEBUI is fine.
I tried to load in mass, works fine until some kind of maximum number (50 KF at once worked fine for me, 100 failed)
3) sorry, have no such link, but thanks for the files on SAP4
Yours
Irmi