Losing natural alterations after paste

Hello,
I have a transcription file from a midi import with correct alterations.
When I copy paste into my score, the natural alterations do not appear anymore.
What am’I missing here ??

Thanks
Yan

G-clef maybe?

The top image has a G-clef, in the bottom a percussion clef is shown

yes, may be…

I just changed for percussion clef in the midi file transcription and the alterations still show well.

I tried with a g clef in the score but same problem.

Just guessing: what’s the instrument definition of the target staff

it was a treble clef staff that I duplicated to create a 5 boobams staff

Guessing from screenshots only is hard. Could you share the file(s) ?

Is the problem only graphical, or is playback also wrong?

If you select a note with a missing natural, what pich is shown in the status bar?

I don’t use playback.

I selected the note only and changed to accidental property to “show”.
that fixed the problem , but I would like to understand the cause…

Last guess if you can’t provide the file

Do you have set this in notation options?

Yes !
It’s ok, the accientals are here, it’s just that their property is set to hide somehow with the paste.

Well, I think you told Dorico first to not show them …

no I have the other options under that dialog that are on to show cancellations