For add old save to this vesion open with text document and ceange old line with this :
<?xml version="1.0" encoding="utf-8"?>
<PlayerData xmlns:xsi="
<Version>v1.0.0</Version>
<FileIntegrity>File integrity COMPROMISED (original:699904 - current: 745472.)</FileIntegrity>
<Name>BLABLA</Name>
<Color>#ffffff</Color>
<?xml version="1.0" encoding="utf-8"?>
<PlayerData xmlns:xsi="
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" xmlns:xsd="
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"><Version>v1.0.0</Version>
<FileIntegrity>File integrity COMPROMISED (original:699904 - current: 745472.)</FileIntegrity>
<Name>BLABLA</Name>
<Color>#ffffff</Color>