After the upgrade of AMOS some outdated strings have appeared on the Basque translation (eu) and I've started reviewing them and seems like I've found a bug: it works fine with most of the strings, but I have found an issue when trying to mark some strings as up-to-date (50 out of more than 800); when I try to mark as them up-to-date them I get this error:

 
Invalid parameters: original version lower than translation version
Error code: invalidparameter
* line 78 of /local/amos/classes/external/make_translation_uptodate.php: invalid_parameter_exception thrown
* line ? of unknownfile: call to local_amos\external\make_translation_uptodate::execute()
* line 261 of /lib/externallib.php: call to call_user_func_array()
* line 81 of /lib/ajax/service.php: call to external_api::call_external_function()

If you need an example to replicate this, one of these strings is auth_sync_script | core_auth