DAC60504: What if I make nLDAC, REFDIV, RSTSEL, GAIN pin floating?

Part Number: DAC60504
Other Parts Discussed in Thread: DAC60508,

We are using the DAC60508 part.

However, since only 3 channels are used, we considere changing to DAC60504, which has a smaller number of channels with the same specifications.

As a result of comparing the DAC60508 and DAC60504,
we knew that that OUT4, 5, 6, and 7 pin have been replaced with GAIN, RSTSEL, REFDIV, and nLDAC.(the remaining pins are 'pin to pin')

On the current circuit, OUT4,5,6,7 are floating.

If DAC60508 is changed to DAC60504 without circuit modification, GAIN, RSTSEL, REFDIV and nLDAC pins become floating.

On the Datasheet, when the pins are not in use, they are supposed to be connected to GND.

Is there a risk of abnormal operation if left in the floating state?

Below image is a portion of current circuit.(DAC60508)