Cannot move Outlook items to offline folders?

Rules failing to run? No message other than cannot move to folder displayed?
Then, if it’s not a corrupt PST file, it could be down to a registry setting. After scanning and fixing up the PST files, using PSTSCAN, I still could move items to the offline folders. But the following allowed me to get back to working:

Open the Run window by clicking ‘Windows+R’ keys together, and then type regedit.
The Registry Editor window gets displayed.
Locate the ‘PSTDisableGrow’ registry key by browsing to the following location:
Right-click ‘PSTDisableGrow’, and click Edit.
In the Edit DWORD (32-bit) Value box, replace the Value data 1 to 0, and then click OK.