"Invalid" data in ETM

"Invalid" data in ETM

Dear,
After compiling Zenon 7.00 sp0 project (I added one tag to screen) I started runtime and on trend window there is no value in value table for period after start when I switch on Cursor, but trends are normal, changing all the time. Datas are valid, but when switch on cursor in the value table there is invalid value (explanation on picture in attachment) for period after start. I try to compile again project but without result. I try to export all historian to .xml and import again, then compile project, without result. On the end I restore an older backup, but nothing. I try to export archives in .csv format to see what is in database, in exported document in record there is a normal value for this tag (Valid with value, date and time).
Can you give an answer hot to fix this problem with cursor?
Albert

This is a migrated post! Originally posted on 19.10.2015 by user anemet. Please be aware that information can be outdated.