I have exported articles and issues from OJS version 3.2.1.4 and want to import to version 3.3.0.8
I exported and tried to import but it gives an error message as stated below.
Validation errors:
- Element ‘{http://pkp.sfu.ca}supplementary_file’: This element is not expected. Expected is one of ( {http://pkp.sfu.ca}id, {http://pkp.sfu.ca}submission_file, {http://pkp.sfu.ca}pkppublication, {http://pkp.sfu.ca}publication ).
**Application Version - OJS 3.3.0.8