You need to look at the "Compatible Chart v1100 for NAV2" (TomTon One XL)

There are for Nav2:

1095_11538 and 1095_11539 = 1100_11648 and 1100_649

1095_11540 and 1095_11541 = 1100_11650 and 1100_11651

1095_11603 = 1100_11711

So you will need to know what 1095 you installed in order to pick the correct 1100 size map

You can find this Compatible Chart at gpsurl forum