Description:
I have a cell that looks for a value in another file. When I save the file, it changes the address of the reference I placed and doesn't bring the value.
If I write the reference every time I need it, it brings it ok, unless I change the value in the origin reference. It brings the previous value.
IE 1: ORIGINAL AND CORRECT CELL REFERENCE 'file:///home/andres/Dropbox/creditos/resumen prestamos.xls'#$Real.D7+1
SAME CELL AFTER SAVING, CLOSING AND OPENING AGAIN   =[2]real!d7+1
And it doesn't work

IE 2: cell value moment 1 = 366. Pasting the cell reference brings '366' as value. If the 366 value changes, and I paste again the cell reference, it keeps bringing '366', even though I even edit the cell, press F9, save, etc. If I close and open again, and paste the cell reference, it works

Steps to Reproduce:
1.reference a value to another .xlsx file.
2.save and close both files
3.open file, and the reference is 'crooked' and doesn't work

Actual Results:
reference doesn't work. It doesn't matter if the referenced file is opened or closed

Expected Results:
reference to external files should work


Reproducible: Always


User Profile Reset: No



Additional Info:
Version: 6.0.6.2
Build ID: 1:6.0.6-0ubuntu0.18.04.1
CPU threads: 4; OS: Linux 4.15; UI render: default; VCL: gtk3; 
Locale: es-AR (en_US.UTF-8); Calc: group