it makes sense it does not work for all dimensions because balances are a semi-additive snapshot. Can you show me your dimension plus the other columns within the stock movements table?
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How would you like to make stock balances change with other dimensions selected (such as product category)?
You could use "allselected" in your meausre to replace "ALL" function, then when you select different dimensions, it shows different results.
If it doesn't solve your probelm, please show more details as LivioLanzo's last post suggested.