If you have manually selected a network when you were abroad, change to "automatic" mode on your return to be automatically connected to the Orange network.
Deactivation should be done upon return. How to proceed?
Orange Travel Pass Bundles are attached to a ‘Validity Period’. Unused minutes & SMS or data within a bundle cannot be carried over/forwarded beyond the validity period. Where the bundles expire before the subscriber finishes them, the balance will be reset to 0 and will not be carried forward.
More information about Orange Travel Pass renewal and validity see Terms & Conditions here.