it was indeed double gziped. I managed to replace the file and did a new migration, but I'm afraid with the same problem
<?xml version="1.0"?>
<execution-result status="success"><object name="DOMAIN" type="domain"><object name="DOMAIN" type="hosting"><message code="ExecCmd::ExFailed" severity="error"><context>void plesk::ExecCmd::reportError() const</context><file>ExecCmd.cpp</file><line>49</line><text>Execution of /opt/psa/admin/plib/api-cli/domain.php --update DOMAIN -hosting true -hst_type phys -ip IPADDERESS -www-root httpdocs -webstat webalizer -err_docs true -login USERNAME -passwd -hard_quota 419430400 failed with return code 1.
Stdout is
WARNING: Option "-hard_quota" is ignored: hard disk quota is not supported
Stderr is
An error occurred during domain update: error in hosting updating: Unable to update hosting settings: system user update is failed: Unable to create system user: usermng: PAM password change failed: 24, Failed preliminary check by password service
</text></message></object><message code="ExecCmd::ExFailed" severity="error"><context>void plesk::ExecCmd::reportError() const</context><file>ExecCmd.cpp</file><line>49</line><text>Execution of /opt/psa/admin/plib/api-cli/domain.php --update DOMAIN -hosting true -hst_type phys -ip IPADDRESS -www-root httpdocs -login USERNAME -passwd -hard_quota 419430400 failed with return code 1.
Stdout is
WARNING: Option "-hard_quota" is ignored: hard disk quota is not supported
Stderr is
An error occurred during domain update: error in hosting updating: Unable to update hosting settings: system user update is failed: Unable to create system user: usermng: PAM password change failed: 24, Failed preliminary check by password service
</text></message></object></execution-result>