Custom format strings reset when you modify a measure formula

[DMM]

I create measure A, then use a custom format string to format it in the Model view.

When I change the DAX formula of measure A, its format goes back to some default format, and my custom format string is gone.

This is clearly an issue -- custom format strings must be preserved when modifying DAX formulas.

[v-qiuyu-msft]

Hi @DMM, 

Would you please share detail steps for us to reproduce the issue? 

Best Regards,
Qiuyun Yu 

[DMM]

@v-qiuyu-msft here are the steps

1. Create any measure, for example like so:

   Measure = 1

2. Go to the Model view
3. In the Properties pane, click Formatting > Format > Custom. Entering the custom format string is not necessary to reproduce the issue -- it is sufficient to specify the format as Custom:
   
4. Go back to the Report view and change the formula of the Measure measure, for example like so (I just changed 1 to 2):

   Measure = 2

5. Go to the Model view and note that the format has been reset to Whole number instead of Custom:
   

[v-qiuyu-msft]

Hi @DMM , 

I have reported this issue internally: CRI 158350390. Will update here once I get any information. 

Best Regards,
Qiuyun Yu