Add to TM by overwriting the existing TU (Default) 
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Overwrite the existing TU  
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Add to TM; overwrite the existing TU if attributes are identical 
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Overwrite the existing TU if the attributes match 
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Only add to TM the new TU; do not overwrite the existing TU 
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Do not overwrite the existing TU, just add as new TUs 
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Add to TM; do not overwrite the existing TU 
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Do not overwrite the existing TU, just add  the TUs to the existing TU 
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Do not add to TM 
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Make no change to the existing TU 
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