hi i find a solution to bypass the limits of export and import backups,just go to :
add tis code:
// ====================
// = Max File Size =
// ====================
if ( ! defined( 'AI1WM_MAX_FILE_SIZE' ) ) {
define( 'AI1WM_MAX_FILE_SIZE', 536870912000 );
}
and done

/wp-content/plugins/all-in-one-wp-migration/constants.php
add tis code:
// ====================
// = Max File Size =
// ====================
if ( ! defined( 'AI1WM_MAX_FILE_SIZE' ) ) {
define( 'AI1WM_MAX_FILE_SIZE', 536870912000 );
}
and done

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