from an online-application pdf-files are opened. Then in Reader 9 the function "Save a Copy" is used. The saved file is a exact copy of the original.
In Reader X the function is calles "Save as". The saved file is smaller then the original. The signature is lost
Test of Example.pdf
Test of ExampleSavedbyReaderX.pdf
Does anybody know why Reader X delets the signature
Could you please try turning off reader X protected mode and check if you continue to see the problem? You could turn off protected mode using following steps:
1. Launch Reader X and select Edit->Preferences...
2. Select General from left navigation
3. Under application startup uncheck "Enable Protected Mode at Startup"
Note: You should switch "ON" protected mode after verifying the problem. Purpose of Reader X Protected Mode is to keep your system safe from PDF based exploits and keeping protected mode OFF will leave your system vulnerable.
To disable the protected mode does not change anything. The signature is still deleted after saving the PDF.