Jasper - version conflict

Good morning! Guys, I'm having trouble trying to change an app report. This pdf report was created in version 6.2.0 and even using version 6.2.0. Finally I can not generate the .jasper file by version conflict. I can not upgrade in the application to a newer version because there are other reports from other teams in the same application. I have already tried with several other versions of jaspersoft and in all I have the same problem, even changing the version in the option to generate the .jasper. Could someone help me, please?