[Resuelto] glossary

Background of the issue:
I have translated many products on my site under development. I need to change one phrase in Italian from 'A partire da' to 'Da'. I suppose I should use the glossary for further translations.

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Symptoms:
I need to change a specific phrase in all translations.

Questions:
Can I change the phrase 'A partire da' to 'Da' for all translations?
Should I use the glossary for further translations?