What does it mean if the "upload updated article" feature is still active four months after submission?

Question

I submitted an article to the International Journal of Vehicle Systems Modelling and Testing four months ago. Its status now is “Reviewing”. However, in the submission details, the upload updated article feature is still active:

My question is: What does this mean? Is it now under review or haven’t the editors found a reviewer yet?

Answer 1

It probably means nothing. Many journals and editorial management systems allow you to update your article at almost any time, usually issuing a warning that you probably do not want to do this, as it will delay the process.

An easy way to test this would be to click on the button¹: If a warning as described above is issued, this should tell you, that everything is in order. If not, you can only know for sure if you ask the journal.

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^{¹ Unless the editorial management system is very bad, you should not be able to destroy anything this way.}