Well yes, but you need a way to identify each row in a unique manner, and since that's an inventory table, I'm guessing you can have several references to the same client, which would mean the Contact ID would repeat between rows, and when you have a repeating KEY in your table, then you get the kind of behaviour you're seeing in your actions, you can read more here:
https://help.appsheet.com/en/articles/1023086-what-is-a-key
I believe your problem can be solved by creating a new column for storing UNIQUEID() for this table, that way you won't have any more repeating KEY values.
When you run an action on a row that has a duplicated key, it just run the actions on the first row it can find that has that key value, which as you saw is not necesarily the row you actually ran the action on, just the first occurence.
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