The daily póliza (journal entry) sends each tax to the account the hotel assigned to it. When a tax has no account of its own, or when the line doesn't carry a breakdown that adds up exactly, Containn posts the whole amount to the cuenta general de trasladados (general output-tax account). It never prorates: inventing a breakdown would be worse than not having one.
The symptom
You open the daily entry in Pólizas (Journal entries) and the tax shows on a line called Impuestos · … (Taxes · …), posted to the general account (in the base chart, 208-01 IVA trasladado, IVA collected), with IVA (Mexico's value-added tax) and ISH (the state lodging tax) lumped together. When a tax goes to its own account, the line carries the tax's name followed by the transaction code's name.
Likely causes, from most to least common
1. The tax has no account assigned
That's the factory setting. The base chart includes 213-01 Impuesto sobre hospedaje por pagar (lodging tax payable), but the daily entry doesn't use the role that account ships with, so ISH lands in the general account until you assign it. How to confirm: in Configuración → Conceptos y sus cuentas (Settings → Codes and their accounts), the Impuestos y sus cuentas (Taxes and their accounts) section shows La cuenta general de trasladados next to the tax. How to fix: pick each tax's account right there.
2. The account you want already has another role
Each account carries a single role. If you pick 213-01 for ISH, the screen replies that the account already has the impuesto hospedaje role and asks for another one. How to fix: in Catálogo de cuentas (Chart of accounts), edit 213-01, clear the Papel en la póliza (role in the entry) field, save, and assign it to ISH again. By the same rule, two taxes can't share an account of their own: if you want them together, leave both in the general account.
3. The day was signed before the account was assigned
The entry is built with the setup in place at signing time, and a signed day is never recalculated. Assigning the account today fixes the days you sign from now on, not earlier ones. How to fix: reclassify earlier days with a manual entry: debit the general account and credit the tax's account for the period's amount (Manual entries).
4. The line has no breakdown that adds up
The tax is split out only when the line's breakdown adds up exactly to the total tax. If it doesn't, or if there's no breakdown at all, as with package components included in the room rate or days signed before the sheet stored the breakdown, it goes whole to the general account. How to confirm: the tax does have an account assigned, yet that line still reads Impuestos · …. How to fix: same as cause 3, with a reclassification entry; the signed day is not redone (Why a signed day is never recalculated).
If a tax has no account of its own and no account in the chart carries the output-tax role, the daily entry isn't generated. See Why an entry isn't generated.